Question

Celia had 30 minutes to do a three-problem quiz. She spent 9 3/4 minutes on question A and 6 1/2 minutes on question B. How much time did she have left for question C?

Answer 1

Answer:

She has 13 and $\frac{3}{4}$ or 13.75 mins left for question c.

Step-by-step explanation:

first convert both fractions into an improper fraction to make it easier:

$9\frac{3}{4} = \frac{39}{4}$

$6\frac{1}{2} = \frac{13}{2}$

add both fractions, make sure both denominators are the same:

$\frac{13}{2}$ x 2 = $\frac{26}{4}$

$\frac{39}{4} + \frac{26}{4} = \frac{65}{4}$

convert back to a mixed fraction:

$\frac{65}{4} =$ $16\frac{1}{4}$

subtract the answer from 30:

$30 - 16\frac{1}{4} = 13\frac{3}{4}$

Answer 2

The amount of time she has left is 13 minutes and 45 seconds