Question
P and Q individually can complete the work in 38 days
and 57 days respectively. If the time taken by R alone to complete the work is 1.25 times the time taken by P and Q together to complete the work, find the time taken by R to complete the work while working alone.Solution
Time taken by P and Q together to complete the work = (38 × 57)/ (38 + 57) = 22.8 days Time taken by R alone to complete the work = 1.25 × 22.8 = 28.5 days
A device that helps to prevent congestion and data collision?
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State true/false
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