Question
A fruit stall had 3 times as many starfruits as mangoes. After 15 starfruits were sold, the number of mangoes became twice the number of the remaining starfruits. How many starfruits were there at the fruit stall at first?
4 m

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A fruit stall had 3 times as many starfruits as mangoes. After 15 starfruits were sold, the number of mangoes became twice the number of the remaining starfruits. How many starfruits were there at the fruit stall at first?