Advertisements
Advertisements
Question
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
Solution
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
RELATED QUESTIONS
`3/5` quintal of wheat costs Rs.210. Find the cost of :
(i) 1 quintal of wheat
(ii) 0.4 quintal of wheat
16 boys went to the canteen to have tea and snacks together. The bill amounted to Rs. 114.40. What will be the contribution of a boy who pays for himself and 5 others?
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?
Eight oranges can be bought for Rs. 10.40. How many more can be bought for Rs.16.90?
Six taps can fill an empty cistern in 8 hours. How much more time will be taken, if two taps go out of order? Assume, all the taps supply water at the same rate.
If 10 horses consume 18 bushels in 36 days. How long will 24 bushels last for 30 horses?
A motorbike travels 425 km in 5 hours. How much distance will be covered by it in 3.2 hours?
A car covers a distance of 180 km in 5 hours. How much time will the car take to cover 54 km with the same speed?
If it has rained 276 cm in the last 3 days, how many cm of rain will fall in one week (7 days)?
Assume that the rain continues to fall at the same rate.
Cost of 10 kg of wheat is ₹ 180. What is the cost of 18 kg of wheat?
