SOLUTION: 1. It takes Frank 2 hours to mow his lawn, but it only takes his dad 5 minutes to mow it. Find (in hours) how much longer it takes Frank to mow the yard than it takes his dad.

Question 591641: 1. It takes Frank 2 hours to mow his lawn, but it only takes
his dad 5 minutes to mow it. Find (in hours) how much longer it takes Frank to mow the yard than it takes his dad.

Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
It takes Frank 2 hours to mow his lawn, but it only takes
his dad 5 minutes to mow it. Find (in hours) how much longer it takes Frank to mow the yard than it takes his dad
.
convert 5 minutes into hours:
5 * 1/60 = 5/60 = 1/12
.
Dad's rate = 1 lawn per 1/12 hours
Frank's rate = 1 lawn per 2 hours
.
2 - 1/12
24/12 - 1/12
(24-1)/12
23/12 hours (answer)
.
That is, Frank takes 23/12 hours longer than his dad to mow the yard
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