Question

Patrice found a book that was 2 1/4 inches thick. She stacked it with another book that was the same thickness. How tall was the stack ?

Answer 1

4.5. inches

Explanation:

Given that:

Thickness of first book = 2 1/4 inches

Thickness of second book = same as first = 2 1/4 Inches

Stacking both books together, height of stack will be :

2 1/4 inches * 2

Height of stack = 9/4 * 2

Height of stack = 18 /4 = 4.5 inches