Question

Shelly builds and sells birdhouses. She takes 1 $\frac{1}{2}$ hours to build and $\frac{1}{2}$ an hour to paint each birdhouse.
How long does it take Shelly to complete 1 bird house?

• A. 4 h
• B. 3 h
• C. 1 h
• D. 2 h

Answer 1

The correct option is D 2 h

Time taken by Shelly to build each birdhouse = 1$\frac{1}{2}$ h
Time taken by Shelly to paint each birdhouse = $\frac{1}{2}$ h

Time taken to complete each birdhouse = 1 $\frac{1}{2}$ + $\frac{1}{2}$
= $\frac{1\times 2+1}{2}$ + $\frac{1}{2}$
= $\frac{3}{2}$ + $\frac{1}{2}$
= $\frac{4}{2}$
= 2 hours