alaynatheriot235 alaynatheriot235

15-11-2020
Mathematics

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Yoko, Bob, and Chang have a total of $120 in their wallets. Bob has $10 less than Yoko. Chang has 3 times what Bob has. How much do they have in their wallets?

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rohleom rohleom

15-11-2020

Y + B + C = 120
Y = B + 10
C = 3B

Substitute:
(B + 10) + B + 3B = 120
5B + 10 = 120
5B = 110
B = $22

Y = B + 10
Y = $32

C = 3B
C = $66

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