2 years ago in Time and Work

# If 3 men or 4 women can plough a field in 43 days, how long will 7 men and 5 women take to plough it?

[A] 10 days
[B] 11 days
[C] 9 days
[D] 12 days

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## Related Questions

• [A] 4 days
• [B] 6 days
• [C] 8 days
• [D] 12 days

### Machine A produces bolts at a uniform rate of 120 every 40 second, and Machine B produces bolts at a uniform rate of 100 every 20 seconds. If the two machines run simultaneously, how many seconds will it take for them to produce a total of 200 bolts?

• [A] 20 seconds
• [B] 24 seconds
• [C] 26 seconds
• [D] 25 seconds
• [E] 30 seconds

### A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?

• [A] 23 days
• [B] 37 days
• [C] 37 1/2 days
• [D] 40 days

### Pipe A can fill in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins. If all of them work together, find the time taken to fill the tank?

• [A] 140/7 mins
• [B] 120/6 mins
• [C] 80/6 mins
• [D] 120/7 min
• [E] 140/8 min

### A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the work?

• [A] 40
• [B] 50
• [C] 54
• [D] 60
• [E] None of these