Mason is purchasing wooden blocks to build a birdhouse. Each block costs $1.80, and Mason wants to spend less than $36. Which inequality represents all the possible number of blocks, n, that Mason can buy to stay within his budget?

Responses
A n > 20n > 20
B n < 20n < 20
C n ≥ 20n ≥ 20
D n ≤ 20

1 answer

The cost of each block is $1.80. In order for Mason to spend less than $36, he can buy a maximum of $36 / $1.80 = 20 blocks. Therefore, the correct inequality is D: n ≤ 20.