Question

a grocery store is offering a promotion where a customer receives $0.20 discount per selected sale items, and Paulo has a coupon where he receives $0.10 off regularly priced items. Before applying the discounts the cost of Paulo's sale items was $58..18 and the cost of Paulo's regularly priced items was $ 41.34. After applying the discounts, Paulo spent $92.32 on both the sale items and regularly priced items. if Paulo bought 6 more sale items than regularly priced items, how many items did he buy in all?

Answer 1

SOLUTION

Define a parameter

$\begin{gathered} Sales\text{ item=X} \\ \operatorname{Re}gular\text{ items =y} \end{gathered}$

Since Paulo have 6 more items, we have

$\begin{gathered} y+6 \\ \text{and } \\ x-6 \end{gathered}$

Then the equation becomes

$undefined$