Advertisements
Advertisements
प्रश्न
Fifteen men can build a wall in 60 days. How many more men are required to build another wall of the same size in 45 days?
Advertisements
उत्तर
In 60 days a wall can be built by = 15 men
In 1 day a wall can be built by = 15 x 60 men
In 45 days a wall can be built by = `(15xx60)/45=900/45` = 20 men
No. of more men required to build the wall in 45 days = 20 – 15 = 5 men
APPEARS IN
संबंधित प्रश्न
4 men or 6 women earn Rs. 360 in one day. Find, how much will:
(i) a man earn in one day?
(ii) a woman earn in one day?
(iii) 6 men and 4 women earn in one day?
50 labourers can dig a pond in 16 days. How many labourers will be required to dig another pond, double in size in 20 days?
A particular work can be completed by 6 men and 6 women in 24 days; whereas the same work can be completed by 8 men and 12 women in 15 days. Find :
(i) according to the amount of work done, one man is equivalent to how many women.
(ii) the time is taken by 4 men and 6 women to complete the same work.
A family of 5 persons can be maintained for 20 days with Rs.2,480. Find, how long Rs.6944 maintains a family of 8 persons?
Ten men, working for 6 days of 10 hours each, finish `5/21` of a piece of work. How many men working at the same rate and for the same number of hours each day, will be required to complete the remaining work in 8 days?
A motorbike travels 330 km in 5 litres of petrol. How much distance will it cover in 2.5 litres of petrol?
If John walks 250 steps to cover a distance of 200 metres, find the distance covered by him in 350 steps
25 metres of cloth costs ₹ 1,012.50. How many metres of the same kind can be bought for ₹ 1,620?
What is the primary objective of the "Unitary Method"?
Once the value of a single unit is known, which operation is used to find the value of "many" units?
