Advertisements
Advertisements
प्रश्न
Ten men take 4 days to complete the task of tarring a road. How many days would 8 men take?
Advertisements
उत्तर
| Number of men | Number of days |
| 10 | 4 |
| 8 | x |
More the men lesser the number of days required to finish the work.
So, the number of men and the number of days required to complete the work are inversely proportional to each other.
`10/8 = "x"/4`
`=> "x" = (10 xx 4)/8`
⇒ x = 5
Thus, when 8 men are involved so, 5 days will be required.
APPEARS IN
संबंधित प्रश्न
Fill in the blank in of the following so as to make the statement true:
x and y are said to vary directly with each other if for some positive number k ....,...... = k.
Anupama takes 125 minutes in walking a distance of 100 metre. What distance would she cover in 315 minutes?
Reema weaves 35 baskets in 25 days. In how many days will she weave 55 baskets?
If 7 m cloth costs ₹ 294, then the cost of 5 m of cloth is ________
In which of the following case, do the quantities vary directly with each other?
Meenakshee cycles to her school at an average speed of 12 km/h and takes 20 minutes to reach her school. If she wants to reach her school in 12 minutes, her average speed should be ______.
A car covers a distance in 40 minutes with an average speed of 60 km/h. What should be the average speed to cover the same distance in 25 minutes?
If Naresh walks 250 steps to cover a distance of 200 metres, find the distance travelled in 350 steps.
A recipe for a particular type of muffins requires 1 cup of milk and 1.5 cups of chocolates. Riya has 7.5 cups of chocolates. If she is using the recipe as a guide, how many cups of milk will she need to prepare muffins?
The following table shows the distance travelled by one of the new eco-friendly energy-efficient cars travelled on gas.
| Litres of gas | 1 | 0.5 | 2 | 2.5 | 3 | 5 |
| Distance (km) | 15 | 7.5 | 30 | 37.5 | 45 | 75 |
Which type of properties are indicated by the table? How much distance will be covered by the car in 8 litres of gas?
