Jennie bought six boxes of pencils for four dollars. How many boxes of pencils can she buy for six dollars?
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Answer:
9 boxes.
Step-by-step explanation:
6 boxes cost 4 dollars
Therefore 1 box costs 4/6 = 2/3 dollar.
So for 6 dollars you can buy 6 / 2/3
= 6*3/2
= 9 boxes.