Question

PLEASE ANSWER ASAP

Maggie has only dimes and quarters in her purse. She has 27 coins with a total value of $4.05. How many dimes does Maggie have in her purse? Enter your answer in the box.

Answer 1

a: number of dimes
b: number of quarters
a+b=27 ————> a=27-b

10a+25b=405
10(27-b) +25b=405
270-10b+25b=405
15b=135
b=9
a=27-9=18
The answer is 18 dimes

Answer 2

4. Number of dimes= d and number of quarters=q
d+q= 27
10d + 25q= 405
d= 27-q
10(27 -q) +25 q= 405
270 -10q + 25q= 405
270 + 15q= 405
15q= 135
q=9
d + q= 27
d +9=27
d=18
She has 18 dimes