Advertisements
Advertisements
प्रश्न
A woker is paid Rs 200 for 8 days work. If he works for 20 days, how much will he get?
Advertisements
उत्तर
Let Rs x be the income for 20 days of work.
| Income (in Rs) | 200 | x |
| Number of days | 8 | 20 |
\[\text{ Since the income and the number of working days are in direct variation, we have } \]
\[\frac{200}{x} = \frac{8}{20}\]
\[ \Rightarrow 200 \times 20 = 8x\]
\[ \Rightarrow x = \frac{200 \times 20}{8}\]
\[ = \frac{4000}{8}\]
\[ = 500\]
\[\text{ Thus, the worker will get Rs 500 for working 20 days } .\]
APPEARS IN
संबंधित प्रश्न
Explain the concept of direct variation.
Which of the following quantities vary directly with each other?
(i) Number of articles (x) and their price (y).
(ii) Weight of articles (x) and their cost (y).
(iii) Distance x and time y, speed remaining the same.
(iv) Wages (y) and number of hours (x) of work.
(v) Speed (x) and time (y) (distance covered remaining the same).
(vi) Area of a land (x) and its cost (y).
The second class railway fare for 240 km of Journey is Rs 15.00. What would be the fare for a journey of 139.2 km?
For 9 cows, 13 kg 500 g of food supplements are required every day. In the same proportion, how much will be needed for 12 cows?
A dozen bananas costs ₹ 20. What is the price of 48 bananas?
A group of 21 students paid ₹ 840 as the entry fee for a magic show. How many students entered the magic show if the total amount paid was ₹ 1680?
If Naresh walks 250 steps to cover a distance of 200 metres, find the distance travelled in 350 steps.
If 25 metres of cloth costs Rs 337.50, then what will be the cost of 40 metres of the same type of cloth?
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?
A water tank casts a shadow 21 m long. A tree of height 9.5 m casts a shadow 8 m long at the same time. The lengths of the shadows are directly proportional to their heights. Find the height of the tank.



