Question

Amanda and Alexis live 4 miles apart. They decide to start walking toward each other’s houses at the same time. Amanda walks at a rate of 3.5 miles per hour and Alexis walks at a rate of 4 miles per hour. How long will it take for them to meet? Round to the nearest hundredth of an hour. [Remember: D = (r)(t)]

Answer 1

-- Amanda walks at the rate of 3.5 mph .
-- Alexis walks at the rate of 4 mph .
-- The space between them closes at the rate of (3.5 + 4) = 7.5 mph .

They'll meet when the space between them becomes zero.

D = (r) (t) .

4 miles = (7.5 mi/hr) (t)

Divide each side
by 7.5 mph : 4 mi / 7.5 mph = t

t = (4/7.5) hour = 0.53 hour

= 32 minutes

Answer 2

The answer is 0.53 hour

Explanation:

I did the lesson on edge