Clarissa cycled at 12 1/2 miles per hour for 2 1/2 hours far did she travel?

A 15
B 25
C 31 1/4
D 10

1 answer

To find how far Clarissa traveled, we need to multiply her speed (12 1/2 mph) by the time she cycled (2 1/2 hours).

First, convert 12 1/2 to an improper fraction:
12 1/2 = (2 * 2 + 1)/2 = 25/2

Now, multiply the speed (25/2 mph) by the time (2 1/2 hours):
(25/2) * (5/2) = (25 * 5)/(2 * 2) = 125/4

So, Clarissa traveled 125/4 miles.

To make the fraction mixed, divide the numerator by the denominator:
125 รท 4 = 31 remainder 1

So, Clarissa traveled 31 1/4 miles.

The correct answer is C) 31 1/4.