Let $ s $ be the number of salads sold and $ d $ be the number of drinks sold.
We are given two equations:
1. Total items sold:
$ s + d = 209 $
2. Total revenue:
$ 6.50s + 2.00d = 836.50 $
---
Step 1: Solve the first equation for $ d $:
$ d = 209 - s $
Step 2: Substitute into the second equation:
$ 6.50s + 2.00(209 - s) = 836.50 $
Step 3: Distribute and simplify:
$ 6.50s + 418 - 2.00s = 836.50 $
$ (6.50 - 2.00)s + 418 = 836.50 $
$ 4.50s + 418 = 836.50 $
Step 4: Subtract 418 from both sides:
$ 4.50s = 418.50 $
Step 5: Divide by 4.50:
$ s = \frac{418.50}{4.50} = 93 $
---
The number of salads sold is
93.
B) 93
Parent Tip: Review the logic above to help your child master the concept of hard math word problems.
