The answer is D. To solve it, you have to add the fractions. 1) Since it is in mixed numbers, you have to turn the fractions to improper. 2 1/2 + 1 1/4 = 5/2 + 5/4
2) Next find the lowest common multiples of the denominators( 2 and 4) 2: 2, <u>4 </u> 4: <u>4 </u> 3) Solve <u> 5</u> x 2 2 x 2 = 10/4 10/4 + 5/4 = 15/4 <--make sure you only add the nominators after you find the common multiples.
4) Turn into a proper fraction 15/4 = 3 3/4
There are 3 3/4 gallons of paint all together. Therefore, answer D is correct.