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
`3/5` quintal of wheat costs Rs.210. Find the cost of :
(i) 1 quintal of wheat
(ii) 0.4 quintal of wheat
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?
If 70 men dig 15,000 sq. m of a field in 5 days, how many men will dig 22,500 sq. m field in 25 days?
One tap can fill a cistern in 3 hours and the waste pipe can empty the full cistern in 5 hours. In what time will the empty cistern be full, if the tap and the waste pipe are kept open together?
If the cost of a dozen soaps is ₹ 460.80, what will the cost of 3 dozen soaps?
A car covers a distance of 180 km in 5 hours. How much distance will the car cover in 3 hours with the same speed?
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. What will be the cost of 20 metres of cloth of the same type?
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"?
