SOLUTION: You walk an average 3.2 mph on the way to school, and at an average of 4 mph on the way home. The total walking time is 18 minutes. How far away is the school?

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Question 1013016: You walk an average 3.2 mph on the way to school, and at an average of 4 mph on the way home. The total walking time is 18 minutes. How far away is the school?

Answer by ikleyn(52775) About Me  (Show Source):
You can put this solution on YOUR website!
.
You walk an average 3.2 mph on the way to school, and at an average of 4 mph on the way home. The total walking time is 18 minutes. How far away is the school?
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Let x be the unknown distance from home to school.

Then you spend x%2F3.2 hours for the way from home to school.
You spend x%2F4 hours for the way from school to home.
The equation is 


x%2F3.2 + x%2F4 = 18%2F60,   or

x%2F3.2 + x%2F4 = 3%2F10.

Can you solve it yourself?