Question

Mr frost typed for 12 minutes at a constant rate of 50 words per minute. Mrs. grey typed the same number of words at a constant rate of60 words per minute how many minutes did it take Mrs. Grey to type the same amount as mr frost?

Answer 1

Mr Frost typed 600 words in 12 minutes (50×12)
so to find out how fast it took mrs. grey to type 600 words you just 600÷60 (because that's how many words a minute Mrs. grey types)

so the answer would be 10 minutes

Answer 2

Let x = Mrs. Grey's time.
Set up. 12(50)= x(60)Solve for x. x=10.Check. 12(50) = 10(60)