yolanda runs 3 miles in 28 minutes. At the same rate , how many miles would she run in 42 minutes?

Answer 1

3/28 = X/42, multiply by 7

3/4 = X/6 cross multiply

4X = 18, divide by 4

X = 18/4 =9/2 = 4.5 miles in 42 minutes

She ran 1 1/2 times as long, so she completed 1 1/2 times as far. 3 x 1 1/2 = 3 x 3/2 = 4.5