25 questions on this test. it is the 25th question on the test. funny huh?
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Work in cents... 10D + 25Q = 480 and D = Q + 6Substitute: 10(Q + 6) + 25Q = 48010Q + 60 + 25Q = 48035Q = 420Q = 12, making D = 18
Work in cents...10D + 25Q = 1405 and D = 100 - QSubstitute: 10(100 - Q) + 25Q = 1405ie 1000 - 10Q + 25Q = 1405ie 15Q = 405so Q = 27, making D = 73
Work in cents...10D + 25Q = 675 and D = Q + 8Substitute: 10(Q + 8) + 25Q = 675ie 10Q + 80 + 25Q = 675ie 35Q = 595so Q = 17, making D = 25
Work in cents...10D + 25Q = 850 and D = 55 - QSubstitute: 10(55 - Q) + 25Q = 850ie 550 - 10Q + 25Q = 850ie 15Q = 300so Q = 20, making D = 35
d = 2q - 18; 10d + 25q = 945 10(2q - 18) + 25q = 945 20q - 180 + 25q = 945 45q = 1125 q = 25 You have 32 dimes ($3.20) and 25 quarters ($6.25)