Every evening Jenna empties her pockets and puts her change in a jar. at the end of the week she counts her money. one week she had 40 coins, all of them dimes and quarters. when she added them up, she had a total of $7.75
how many dimes did Jenna have?

Question

Every evening Jenna empties her pockets and puts her change in a jar. at the end of the week she counts  her money. one week she had 40 coins, all of them dimes and quarters. when she added them up, she had a total of $7.75
how many dimes did Jenna have?

jigglypuff314 · Answer

your system of equations would be
d + q = 40
0.10d + 0.25q = 7.75