A university's housing and residence office wants to know how much students pay per month for rent in off-campus housing. The un
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Let e=erasers and p=pencils. So we know the total amount of erasers plus pencils sold is equal to 220. Therefore,
We also know the cost of erasers and pencils totaled to $695 in earnings and so:
and so those are your two equations.
We also know the cost of erasers and pencils totaled to $695 in earnings and so:
and so those are your two equations.