A man, a woman and a boy can do a work in 4, 8, 32 days respectively. How many boysare required with 1 man and 1 woman to complete the same work in 1/4 day?
1M 1W 1B 4 8 32 LCM = 32 units So ratio of eff: = 8 : 4 : 1 Let number of boys be x who are working with 1 man & 1 women So (8+4+1*x)*(1/4)= 32 12+x = 128 S o x = 116
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A train can cross a pole, a bridge of 510 meter long and platform of 480 meter long in 15 seconds, _____ seconds and 31 seconds, respectively.
Th...
