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If 3 men with 4 boys can earn Rs 2100 in 7 days, and 11 men with 13 boys a
earn Rs 8300 in 8days. In what time will 7 men with 9 boys earn Rs 11,000?
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Step-by-step explanation:
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(3 men+4 boys) can earn Rs.(210+7), i.e., Rs.30.00 in one day. And (11 men+13 boys) can earn Rs.(830÷8), i.e., Rs.103.75 in one day. Find out the earning of 1 man and 1 boy and then proceed.
3m+4b
11m+13b
=30.00
=103.75
}⇒1m=5,1b=3.75
Wages for 7m+9b=7×5+9×3.75=Rs.68.75 per day
∴ No. of required days =Rs.1100+Rs.68.75=16
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