Billy Bob Joe can run 5 miles in 42 minutes. At the same rate, how long would it take Billy Bob Joe to run 7 miles

Answer 1

42/5 = X/7, ratio of time in minutes to miles run is the same

cross multiply

5X = 7(42)= 294

divide by 5

X = 294/5 = 58.8 minutes to run 7 miles

he runs one mile in 42/5 = 8.4 minutes

he runs seven miles in 7 times 8.4 minutes = 7(8.4) = 58.8 minutes