A swimmer swims 90m long pool. He covers the distance of 180m by swimming from one end to other end back along the same path. If he covers the first 90m at speed of 2m/s,then how fast he swim so that his average speed is 3m/s.
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he will cover 180m +45m=225m
PREMAN1:
plzz give ur answer in detail
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if he swims at 135 m average speed is 3m/s
give ur ans in detail
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