surrender works a work in 1 hours and 30 minutes. surrender and suresh work this work in 1 hour. how long time will take suresh alone this work?
surrender works a work in 1 hours and 30 minutes. surrender and suresh work this work in 1 hour. how long time will take suresh alone this work?
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We first convert hours into minutes
surrender complete in 90 mins and surrender + suresh complete in 60 mins
LCM(90,60) is 180 units which we assume as the total work .
Now surrender complete 180/90=2 units of work per min........................eq1
Surrender + suresh complete 180/60=3 units of work per min......................eq2
from eq1 and eq2 Suresh=1 unit of work per min
So total time taken by suresh to complete the work will be 180/1=180 minutes or 3 hrs