Ailing, Bala, Cindy and Dan shared the cost of a present equally. Bala did not bring enough money and only managed to pay for half of his share. Only Ailing and Cindy helped pay for the rest of Bala’s share . The ratio of the amount of money Ailing paid to the amount of money Cindy paid was 3 : 4. the next day, Bala returned $24 to Cindy, how much did the present cost?
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