A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. the number of days taken by B to finish the work is:
a) 12
b) 15
c) 20
d) 30
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apoorva.srivastva
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pandeyvineet24
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let the number of days for B be X . Therefore, A will complete the task in X/3 days
also its given that B takes 10 more days
therefore X - X/3 = 10
solve for it gives X = 15 (number of days B takes)
also its given that B takes 10 more days
therefore X - X/3 = 10
solve for it gives X = 15 (number of days B takes)
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quant-master
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A does it in x days while B does it in 3x days. 3x-x =10 hence x=5apoorva.srivastva wrote:A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. the number of days taken by B to finish the work is:
a) 12
b) 15
c) 20
d) 30
since B takes 3x days he will take 15 days to complete the work
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