SOLUTION: jan buys 12 pen for $10.00. each pen cost the same amount. write a proportion to find the number of pens jan can buy for $15.00

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Question 343588: jan buys 12 pen for $10.00. each pen cost the same amount. write a proportion to find the number of pens jan can buy for $15.00
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
10/12=15/x
10x=180
x=18