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Mathematics, 28.06.2019 14:50 jakaylathomas11

Aprofessional gambler reported that at the end of the first race at the track he had doubled his money. he bet $31 on the second race and tripled the money he came with. he bet $51 on the third race and quadrupled his original bankroll. he bet $84 on the fourth race and lost it, but still had $40 left. with how much money did he start?

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