Asked by Alberto
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?
Answers
Answered by
Steve
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
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
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