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Multiple Choice Questions

5 men can do a piece of work in 2hours while 7 woman can do in 3 hours or 9 boys do in 4hrs How long...........

Elelmentary Mathematics (UPPCS) Time and work

5 men can do a piece of work in 2hours, while 7 woman can do in 3 hours or 9 boys do in 4hrs. How long would take by 1 man, 1woman, 1boy together to do the work?

1260/221

1270/231

1221/260

1260/236

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Explanation:

Solution:
1 man complete the work in = 2*5= 10 hrs.
Same 1 woman = 21hrs
1 boy = 36hrs
LCM = 1260
M = 10………1260/10= 126
W = 21……………………… 60
B = 36……………………… 35
221
= 1260/221 Ans

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