Question

11. A mom gives her small child either dimes or quarters for helping with odd jobs around the house. At the

end of the day, the child has 9 coins with a total value of $1.20. How many were dimes and how many were
quarters?

Answer 1

Explanation:

2 q and 7 dimes kkkkkkkkk

Answer 2

q = 2

d = 7

Explanation:

System of Equations:

d + q = 9

10d + 25q = 120

Use Substitution:

let d = 9 - q

10(9 - q) + 25q = 120

90 - 10q + 25q = 120

15q = 30

q = 2

d = 7