Advertisements
Advertisements
Question
If 56 workers can build a wall in 180 hours, how many workers will be required to do the same work in 70 hours?
Advertisements
Solution
Workers: Hours:: Workers: Hours
56 : 180 :: x : 70
∴ By inverse proportion
56 × 180 = x × 70
`⇒"x"=(180xx56)/70`
= 144 workers
APPEARS IN
RELATED QUESTIONS
In a fort 150 men had provisions for 45 days. After 10 days, 25 men left the fort. How long would the food last at the same rate?
72 men do a piece of work in 25 days. In how many days will 30 men do the same work?
Cost of 24 identical articles is Rs. 108, Find the cost of 40 similar articles.
If 15 men can complete a piece of work in 30 days, in how many days will 18 men complete it?
If 12 men or 18 women can complete a piece of work in 7 days, in how many days can 4 men and 8 women complete the same work?
Twelve typists, all working with the same speed, type a certain number of pages in 18 days working 8 hours a day. Find, how many hours per day must sixteen typists work in order to type the same number of pages in 9 days?
A, B, and C can do a piece of work in 6 days, 12 days, and 24 days respectively. In what time will they altogether do it?
A and B working together can mow a field in 56 days and with the help of C, they could have mowed it in 42 days. How long would C take by himself?
A can do a piece of work in 10 days, B in 12 days, and C in 15 days. All begin together but A leaves the work after 2 days and B leaves 3 days before the work is finished. How long did the work last?
P alone can do `1/2` of a work in 6 days and Q alone can do `2/3` of the same work in 4 days. in how many days will they finish `3/4` of the work, working together?
