Average of weights of 35 students is 45 kg. If we add one more student John then their average becomes 45.5 kg. How much is the weight of John?

## GMAT Prep: Averages Sample Problem 4

Average of weights of Mike and Susan is 35 kg. Average of weights of Mike and Ashley is 40 kg. Average of weights of Ashley and Susan is 45 kg. How much is the weight of Susan?

## GMAT Prep: Averages Sample Problem 3

It was 7 cm of rainfall on Sunday. Average rainfall for the rest of the week was 3.5 cm. What is the average rainfall for the entire week?

## GMAT Prep: Averages Sample Problem 2

Sum of weights of 25 students is 1275 kg. Out of these 25 students, 24 students are chosen randomly and their average weight comes out to be 50 kg. How much is the weight of one remaining student?

## GMAT Prep: Averages Sample Problem 1

Mike scores average of 21 in 7 math tests. His average in the first 3 tests is 19. What is his average in the last 4 tests?

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