10 women can complete a work in 7 days, and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?
- 8 days
- 7 days
- 6 days
- Cannot be determined
Explanation
Work done by 10 women in 7 days = 1
Work done by 1 woman in 7 days = 1/10
Work done by 1 woman in 1 day = 1/(10 × 7) = 1/70
Work done by 10 children in 14 days = 1
Work done by 1 child in 14 days = 1/10
Work done by 1 child in 1 day = 1/(10 × 14) = 1/140
Work done by 5 women in 1 day = 5 × 1/70 = 5/70 = 1/14
Work done by 10 children in 1 day = 10 × 1/140 = 10/140 = 1/14
Total work done per day = 1/14 + 1/14 = 2/14 = 1/7
Total days required = 7 days
Related MCQs
- 50 km/hour
- 100 km/hour
- 150 km/hour
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 3 hours 30 minutes, treating the speed change as extra delay.
- 3 hours 18 minutes, being 48 + 48 12 minutes plus 1 hour 30 minutes.
- 2 hours 48 minutes, using an overall average speed.
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 60 minutes
- 90 minutes
- 108 minutes
- 120 minutes
اس سوال کو وضاحت کے ساتھ پڑھیں
- 10 minutes
- 15 minutes
- 20 minutes
- 25 minutes
اس سوال کو وضاحت کے ساتھ پڑھیں
- 6
- 8
- 10
- 12
اس سوال کو وضاحت کے ساتھ پڑھیں
