SOLUTION: How many miles do you live from school if when you drive 45 mph you arrive 1 minute early and when you drive 40 mph you arrive 1 minute late

Question 987388: How many miles do you live from school if when you drive 45 mph you arrive 1 minute early and when you drive 40 mph you arrive 1 minute late

Answer by ikleyn(52810) (Show Source): You can put this solution on YOUR website!
.
Let L be the distance to the school (in miles).

When you drive to school at the speed of 45 mph, your speed is miles per minutes, and you spend minutes to get school.

When you drive to school at the speed of 40 mph, your speed is miles per minutes, and you spend minutes to get school.
According to the condition,

- = 2.

Solve it:

- = 2,

- = 2,

9L - 8L = 12,

L = 12 miles.

Answer. The distance from home to school is 12 miles.

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