SOLUTION: Hi the ratio of the cost of a file to a pen is 3:1.the file costs $1.60 more than the pen. Find the average cost per item of 5 files and 3 pens. thanks

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Question 1145881: Hi
the ratio of the cost of a file to a pen is 3:1.the file costs $1.60 more than the pen. Find the average cost per item of 5 files and 3 pens.
thanks
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
file, 3p
pen, p

3p=p%2B1.6

2p=1.6

p=0.8and3p=2.4


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Find the average cost per item of 5 files and 3 pens.
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%285%2A2.4%2B3%2A0.8%29%2F%285%2B3%29