18. A store sells two different kinds of rulers, plastic and wood. The receipts show that they have sold 35 total rulers today. The plastic rulers cost $2 each and the wood rulers cost $3 each. $82 worth of rulers were sold today. How many of each type of ruler were sold?

12 wooden rulers

23 plastic rulers

Step-by-step explanation:

Total rulers sold - 35

Total profit - $82

1 wooden ruler - $3

1 plastic ruler - $2

$3 x 12 = $36

$2 x 23 = $46

$46 + $36 = $82

12 + 23 = 35 rulers

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

x=6 and x=3

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