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mote1985 [20]
3 years ago
8

PLEASE ANSWER ASAP

Mathematics
2 answers:
lora16 [44]3 years ago
8 0
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
<span>She has 18 dimes</span>
Studentka2010 [4]3 years ago
7 0
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
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