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Which of the following quantities vary d...

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).

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RD SHARMA ENGLISH-DIRECT AND INVERSE VARIATIONS-All Questions
  1. The amount of extension in an elastic spring varies directly as the...

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  2. Explain the concept of direct variation.

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  3. Which of the following quantities vary directly with each other? (i...

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  4. In which of the following tables a and b vary directly? (i) a: 7,...

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  5. Fill in the blanks in each of the following so as to make the statem...

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  6. Complete the following tables given that x varies directly as y . (i) ...

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  7. Find the constant of variation from the table given below: x, 3, ...

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  8. Rohit bought 12 registers for Rs 156, find the cost of 7 such regis...

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  9. Anupama takes 125 minutes in walking a distance of 100 metre. What ...

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  10. If the cost of 93 m of a certain kind of plastic sheet is Rs 1395, ...

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  11. Suneeta types 1080 words in one hour. What is her GWAM (gross words...

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  12. A car is travelling at the average speed of 50 km/hr. How much dist...

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  13. 68 boxes of a certain commodity require a shelf-length of 13.6 m. H...

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  14. In a library 136 copies of a certain book require a shelf-length of...

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  15. The second class railway fare for 240 km of journey is Rs 15.00. Wh...

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  16. If the thickness of a pile of 12 cardboards is 35 mm, find the thick...

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  17. The cost of 97 metre of cloth is Rs 242.50. What length of this can...

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  18. 11 men can dig 6 3/4 metre long trench in one day. How many men should...

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  19. A worker is paid Rs 210 for 6 days work. If his total income of the...

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  20. A worker is paid Rs 200 for 8 days work. If he works for 20 days, ho...

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