Question

Malorie can work 10 math problems in 3 minutes.

At this rate, how many problems can she work in one hour?

Answer 1

Would it be 200?

Answer 2

same thing...use proportions

Answer 3

10/3=x/60
3x=600
x=200
you are right

Answer 4

oh yay

Answer 5

Find the rate. X problems/y time is x/y problems/time. Multiply by time to get problems worked.

For example, 3 problems in 5 minutes is a rate of 3/5 problems/minute. In 25 minutes, 3/5 problems/minute*25 minutes = 75/5 problems = 15 problems.

I find computing the rate safer (though equivalent) than doing proportions, especially if unit conversions are required.

Answer 6

;-;