15 men dug a trench of 90m long in 3hours how long will it take 16 men to dig a trench of 48m ?
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90 min or 1½ hour will be taken for 16 men to dig a trench of 48 m
the process is above in the pic
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15 men dug 90m in 3 hours
15 men dug 1m in 3/90 hours
1 man will dug 1m in (3/90)×15 hrs=1/2 hrs
16 men will dug 1,m in (1/2)/16=1/32 hrs
16 men will dug 48 m in (1/32)×48=3/2 hrs
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