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By travelling at a speed of 48 kilometre...

By travelling at a speed of 48 kilometres per hour, a car can finish a certain journey in 10 hours. To cover the same distance in 8 hours, the speed of the car should be

A

60 km//h

B

80 km//h

C

30 km//h

D

40 km//h

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NCERT EXEMPLAR-DIRECT AND INVERSE PROPORTIONS -EXERCISES
  1. The number of teeth and the age of a person vary

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  2. A truck needs 54 litres of diesel for covering a distance of 297 km. T...

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  3. By travelling at a speed of 48 kilometres per hour, a car can finish a...

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  4. In which of the following case, do the quantities vary directly with e...

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  5. Which quantities in the previous question vary inversely with each oth...

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  6. Which of the following vary inversely with each other?

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  7. Both x and y are in direct proportion, then 1/x and 1/y are

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  8. Meenakshee cycles to her school at an average speed of 12 km/h and tak...

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  9. 100 persons had food provision for 24 days. If 20 persons left the pla...

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  10. If two quantities x and y vary directly with each other, then

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  11. If two quantities p and q vary inversely with each other, then

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  12. If the distance travelled by a rickshaw in one hour is 10 km, then the...

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  13. Both x and y vary directly with each other and when x is 10, y is 14, ...

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  14. If x = 5y, then x and y vary with each other

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  15. If xy = 10, then x and y vary with each other.

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  16. When two quantities x and y are in proportion or vary they are writte...

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  17. When two quantities x and y are in proportion or vary they are writte...

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  18. Both x and y are said to vary with each other if for some positive nu...

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  19. x and y are said to vary directly with each other if for some positive...

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  20. Fill in the blanks in each of the following so as to make the state...

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