if 3 men with 4 boys can earn Rs.210 in 7 days and 11 men with 13 boys can earn
Rs.810 on 8 days in what time will men with 9 days earn Rs. 1100 explain
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Answer:
In 16 days
Step-by-step explanation:
According to the question
Let men = m and boys = b
Then,
3m + 4b = 210 rupees in 7 days
3m .+ 4b = 30 rupees in 1 days [equation 1]
Also,
11m + 13b = 830 rupees in 8 days
11m + 13b = 103.75 rupees in 1 days [equation 2]
Multiple equation 2 by 4 and equation 1 by 13 after that subtracting both
44m + 52b = 415
39m + 52b = 390
- - -
5m = 25
m = 5
Putting the value of m in equation 1
15 + 4b = 30
b = 3.75 rupees per day
Then
7m + 9b = 7(5) + 9(3.75)
7m + 9b = 68.75 rupees in one day
So, days =
days = 16
Hence, 7 men with 9 boys earn rs 1100 in 16 days.
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Step-by-step explanation:
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