Answer:
Step-by-step explanation:
- Plain wrapping paper - p
- Shiny wrapping paper - s
<u>Equations:</u>
- 10p + 4s = 170
- 5p + 3s = 105
<u>Double the second equation and subtract from the first one:</u>
- 10p + 4s - 10p - 6s = 170 - 210
- -2s = - 40
- s = 20
<u>Find p:</u>
- 10p + 4*20 = 170
- 10p = 90
- p = 9
alternative exterior angles
3 passengers per car
6 stamps per sheet
12 chairs per row
Answer:
Step-by-step explanation:
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