Math Problem Statement
The distance between Dakhhineshwar and Babughat is 90km. A boat while going downstream takes 3 hours to complete this distance. Bulbul a passenger in a boat dropped a polythene when she was at Dakhhineshwar. After reaching Babughat, she realized that the polythene was dropped. She immediately took the boat and started going upstream. After how much time (in hours), after the polythene was dropped, will she be able to find the polythene if the speed of the boat is 20 kmph in still water.
Solution
Math Problem Analysis
Mathematical Concepts
Relative speed
Distance, Speed, Time calculations
Formulas

Theorems

Suitable Grade Level
Grades 912
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