SOLUTION: Hi Joanne has some money. She can either buy 15 pencils or 9 pens with all her money. She buys 10 pencils for 24 dollars and some pens with the remaining amount of money. How

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Question 1197390: Hi
Joanne has some money. She can either buy 15 pencils or 9 pens with all her money. She buys 10 pencils for 24 dollars and some pens with the remaining amount of money.
How much does a pen cost.
How many pen does she buy.
Thanks

Answer by math_helper(2461)   (Show Source): You can put this solution on YOUR website!

Think about it for a bit... if you can figure out the cost of one pencil, the whole problem can be solved. What given information tells you how much one pencil costs?










Ans: 24 dollars buys 10 pencils so ONE pencil costs $24/10
From there, using the other given information, you should be able to solve.

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