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3 years ago

a bag contains 57 coins which are only quarters and dimes the total value of coins is $9.45 how many dimes are in the bag

Mathematics

1 answer:

Digiron [165]3 years ago

6 0

Answer:

There are 32 dimes and 25 quarters.

Step-by-step explanation:

q + d = 57 or q = 57 - d

25q + 10d = 945

substitute first equation into second equation:

25(57 - d) + 10d = 945

1425 - 25d + 10d = 945

-15d = -480

d = -480/-15 = 32

using first equation:

q = 57 - 32 = 25

check using second equation:

25(25) + 10(32) = 945 checks

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3 years ago

a bag contains 57 coins which are only quarters and dimes the total value of coins is $9.45 how many dimes are in the bag​

a bag contains 57 coins which are only quarters and dimes the total value of coins is $9.45 how many dimes are in the bag