Math, asked by Vaishnav7148, 1 year ago

By walking at 3 by 4 of his usual speed a man reach office 20 minutes later than usual usual time is

Answers

Answered by ankit6390
1
3/4 means it's rational diff is 1
Nd a/q , 1= 20
4= 20×4=80
so, his usual time is 80min
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