Question

Nancy and Elsa like to ride bikes. The equation m=12h represents the approximate number of mies m Nancy bikes in h hours . The equation m = 9h represents the approximate number of miles Elsa bikes in h hours . How much longer will it take Elsa to bike 72 miles than Nancy?

Answer 1

• 24 hours

Explanation:

Nancy bikes 12h miles in h hours, Elsa bikes 9h miles in h hours.

The difference in the distance is:

• 12h - 9h = 3h

The time required to bike 72 miles difference:

• 3h = 72
• h = 72/3
• h = 24