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Amit Sharma

· started a discussion

· 1 Months ago

please explain me (Question: 190261.0 )

question is asking - how many man ? and u r giving days

Question:
If 18 men earn Rs. 1440 in 5 days, in how many days 8 men can earn Rs. 1920 ? 
Options:
A) 10
B) 12
C) 15
D) 18 
Solution:
Ans: (c) 18 men can earn in 5 days = Rs. 1440 

1 man can earn in 1 day = Rs. \(\left ( \cfrac {1440}{5 × 18} \ \right )\)

= Rs. 16 

8 men can earn Rs. 1920 in = Rs. \(\left ( \cfrac {1920}{8 × 16} \ \right )\)

= 15 days. 

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