The bus goes to Mumbai from Delhi at the rate of 60 km per hour. Another bus leaves from Mumbai to Delhi at the same time as the first bus at the rate of 70 km/hr. Find the average speed of the journeys of the two buses combined if it is known that the distance from Mumbai to Delhi is 420 kilometers.

The bus goes to Mumbai from Delhi at the rate of 60 km per hour. Another bus leaves from Mumbai to Delhi at the same time as the first bus at the rate of 70 km/hr. Find the average speed of the journeys of the two buses combined if it is known that the distance from Mumbai to Delhi is 420 kilometers.

Find the mean proportional of 0.04 & 0.09

Find the mean proportional of 0.04 & 0.09

Rocky moves a certain distance upstream in 10 hours & rows the same distance downstream in 6 hours. If the speed of the stream is 2.5 kmph. Find the speed of the boat. 

Rocky moves a certain distance upstream in 10 hours & rows the same distance downstream in 6 hours. If the speed of the stream is 2.5 kmph. Find the speed of the boat. 

A man travelled from post-office to village at a speed of 20 km/hr and returned to village at a speed of 10 km/hr. He took 12 hours to complete the total journey. Find the distance of post office to village in Kms?

A man travelled from post-office to village at a speed of 20 km/hr and returned to village at a speed of 10 km/hr. He took 12 hours to complete the total journey. Find the distance of post office to village in Kms?

What will come in the place of question mark (?) in the following question (You do not have to calculate the exact value)?        

What will come in the place of question mark (?) in the following question (You do not have to calculate the exact value)?        

Find the wrong term in the series 2, 3, 8, 27, 112, 570, 3396

Find the wrong term in the series 2, 3, 8, 27, 112, 570, 3396

A bag contains 3 red, 6 blue and 2 green balls. Two balls are drawn at random. What is probabilty of drawing green ball on second draw. When it is known that first ball drawn was also red?

A bag contains 3 red, 6 blue and 2 green balls. Two balls are drawn at random. What is probabilty of drawing green ball on second draw. When it is known that first ball drawn was also red?

If 5 balls are picked at random, what is the probability that none are orange ?

If 5 balls are picked at random, what is the probability that none are orange ?

An object is sold for Rs 480 at a profit of 20%. What will be the profit or loss percent, if the object had been sold for Rs 320? 

An object is sold for Rs 480 at a profit of 20%. What will be the profit or loss percent, if the object had been sold for Rs 320? 

 A shopkeeper gives a discount of 10% in every 4 months at an article. If a man purchases it for Rs. 25515 in the month of December, then what was the initial price of that article in the month of January?

 A shopkeeper gives a discount of 10% in every 4 months at an article. If a man purchases it for Rs. 25515 in the month of December, then what was the initial price of that article in the month of January?

In the following questions, two equations numbered are given in variables x and y.  Solve both the equations and find out the relationship between x and y.

,

In the following questions, two equations numbered are given in variables x and y.  Solve both the equations and find out the relationship between x and y.

,

 In the following questions, two equations numbered are given in variables x and y.  Solve both the equations and find out the relationship between x and y.

 In the following questions, two equations numbered are given in variables x and y.  Solve both the equations and find out the relationship between x and y.

Mr. Thomas invested an amount of Rs. 13,900 divided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be Rs. 3508, what was the amount invested in Scheme B?

Mr. Thomas invested an amount of Rs. 13,900 divided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be Rs. 3508, what was the amount invested in Scheme B?

A person borrows Rs. 5000 for 2 years at 4% p.a. simple interest. He immediately lends it to another person at 6 % p.a for 2 years. Find his gain in the transaction per year.

A person borrows Rs. 5000 for 2 years at 4% p.a. simple interest. He immediately lends it to another person at 6 % p.a for 2 years. Find his gain in the transaction per year.

4 men, make 10 pots in 6 days working 10 hours/ day. In how many days will 5 men make 20 pots working 8 hours/day. 

4 men, make 10 pots in 6 days working 10 hours/ day. In how many days will 5 men make 20 pots working 8 hours/day. 

A is twice as efficient as B & working together they complete a piece of work in 12 days. In how many days does A alone complete the work?

A is twice as efficient as B & working together they complete a piece of work in 12 days. In how many days does A alone complete the work?

A container contains 40 liters of the milk. From the container 4 liters of the milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?

A container contains 40 liters of the milk. From the container 4 liters of the milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?

A Mixture contain 88% of sulphur,another mixture contain 70% of sulphur.In order to get 84% of sulphur,in what ratio these two must be mixed.

A Mixture contain 88% of sulphur,another mixture contain 70% of sulphur.In order to get 84% of sulphur,in what ratio these two must be mixed.

The least number that should be subtracted from 3200 so as resulting number is exactly divisible by 3,5,10,12?

The least number that should be subtracted from 3200 so as resulting number is exactly divisible by 3,5,10,12?

Find the L.C.M of 360, 440 and 730 

Find the L.C.M of 360, 440 and 730 

If two numbers are 25% & 55% of a third number, then what percent of the first number is the second number?

If two numbers are 25% & 55% of a third number, then what percent of the first number is the second number?

33.33% of 2481 is ______? 

33.33% of 2481 is ______? 

Out of 12 boys, 6 boys are to be selected and arranged for a photograph, in how many ways can this be done?

Out of 12 boys, 6 boys are to be selected and arranged for a photograph, in how many ways can this be done?

In how many ways can 10 people be arranged on a circular table.

In how many ways can 10 people be arranged on a circular table.

In how many ways you can select a team of 11 players from 18 players for a cricket match?

In how many ways you can select a team of 11 players from 18 players for a cricket match?