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Sholpan [36]
3 years ago
13

Adrian has $6.35 in dimes and quarters. The number of dimes is three more than three times the number of quarters. How many quar

ters does he have? What expression represents the number of dimes if q represent quarters
Mathematics
1 answer:
Mrrafil [7]3 years ago
8 0
I: 635=dimes*10+quarters*25
or shorter
635=d*10+q*25

II: d=q*3+3

Substitute II (d=3q+3) into I to replace d:
635=d*10+q*25
635=(3q+3)*10+q*25
635=30+30q+25q
605=55q
11=q

-> 11 quarters

"What expression represents the number of dimes if q represent quarters"
insert q=11 into II:
II: d=q*3+3
d=11*3+3
d=33+3
d=36
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