Math

posted by Apoorv

A does 20% less work than B .If a complete
a piece of work in 7& 1/2 hours then B can do it in
options- 5,5&1/2,6,6&1/2
plz solve without using x and y method

  1. Henry

    B = 7.5 - 0.2*7.5 = 6h.

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