Question

Lina has 12 coins in her purse. D of them are dimes and the rest are quarters. How many quarters does Lina have? How much money does Lina have in quarters? HELPPPP

Answer 1

D=dimes
q=quarters
if she has 12 coins then
12-d=q she has 12-d quarters
we dont know how much money she has unless we know d.
she could have 12 dimes and 0 quarters or 11 dimes and 1 quarter etc. we need more information to solve.