distance = speed*time
both walk for 5 hours
Let x = Joe's speed
1.5*5 + x*5 = 20
7.5 + 5x = 20
5x = 12.5
x = 2.5
check:
Jill walks 1.5*5 = 7.5 km
Joe walks 2.5 * 5 = 12.5 km
total: 20 km
Jill is 20 kilometers away from Joe. Both begin to walk toward each other at the same time. Jill walks at 1.5 kilometers per hour. They meet in 5 hours. How fast is Joe walking?
1 answer
1 answer