Question

$1\frac12 + 3\frac12 + 5\frac12 + \frac12=?$

• A. 11
• B. $$10\frac12$$
• C. $$11\frac12$$
• D. 10

Answer 1

Answer:

A. 11

$1\frac12+3\frac12+5\frac12+\frac12$

$=3/2+7/2+11/2+1/2$

$=(3+7+11+1)/2$

$=22/2$

$=11$