Question

At a math competition 2 students can answer 40 questions in 1 hour. At the same rate, how many questions could 5 students answer in 15 mins?

Answer 1

25 questions

Explanation:

At a math competition 2 students can answer 40 questions in 1 hour.

Therefore, 1 student can answer in 1 hour =
`(40)/(2)`

= 20 questions

5 students can answer in 1 hour = 20 × 5 = 100 questions

60 minutes = 1 hour

15 minutes =
`(15)/(60)` = 0.25 hours

5 students can answer in 0.25 hours = 100 × 0.25

= 25 questions

5 students could answer 25 questions in 15 minutes.