a child drew 20% from a jar and filled it with equal quantity of sugar solution. he repeated it 4 times and finally 512 gms of honey was left in the jar and rest sugar solution. what was tha amount of honey initially present in the jar?

A and B are two points on a river. Two boats X and Y started simultaneously from A and B respectively towards each other with equal speeds and the distance between them reduces by 32 km in 4 hours. Find the speed of each boat in still water.

P.S. this is a question of Arithmetic under Time and Distance, however, I could not find the Topic inside the drop-down.

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