Advertisements
Advertisements
प्रश्न
A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps are required if the pool is to be filled in `2 2/3` hours?
Advertisements
उत्तर
A swimming pool can be filled in 4 hours by 8 pumps.
If we want to fill the swimming pool in 1 h, we required 4 × 8 = 32 pumps
In `2 2/3` i.e. `8/3 h`, the number of pumps required = `32 ÷ 8/3`
= `(32 xx 3)/8`
= 4 × 3
= 12 pumps
APPEARS IN
संबंधित प्रश्न
Explain the concept of direct variation.
Anupama takes 125 minutes in walking a distance of 100 metre. What distance would she cover in 315 minutes?
A car is travelling at the average speed of 50 km/hr. How much distance would it travel in 12 minutes?
68 boxes of a certain commodity require a shelf-length of 13.6 m. How many boxes of the same commodity would occupy a shelf length of 20.4 m?
A dozen bananas costs ₹ 20. What is the price of 48 bananas?
In which of the following case, do the quantities vary directly with each other?
An auto rickshaw takes 3 hours to cover a distance of 36 km. If its speed is increased by 4 km/h, the time taken by it to cover the same distance is ______.
In a camp, there is enough flour for 300 persons for 42 days. How long will the flour last if 20 more persons join the camp?
Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose various shades are tried by mixing containers of blue paint and white paint. In the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them.
| Mixture C | Mixture D |
 |
 |
If one container has one litre paint and the building requires 105 litres for painting, how many container of each type is required to paint the building by darkest blue shade?
