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A contractor undertook a contract to com...

A contractor undertook a contract to complete a part of a stadium in 9 months with a team of 560 persons. Later on, it was required to complete the job in 5 months. How many extra persons should he employ to complete the work?

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NCERT EXEMPLAR-DIRECT AND INVERSE PROPORTIONS -EXERCISES
  1. If x varies inversely as y and y = 60 when x = 1.5. Find x. when y = 4...

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  2. In a camp, there is enough flour for 300 persons for 42 days. How long...

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  3. A contractor undertook a contract to complete a part of a stadium in 9...

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  4. Sobi types 108 words in 6 minutes. How many words would she type in ha...

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  5. A car covers a distance in 40 minutes with an average speed of 60 km/h...

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  6. It is given that l varies directly as m. Write an equation which rel...

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  7. It is given that l varies directly as m. Find the constant of propor...

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  8. It is given that l varies directly as m. Find l, when m is 33.

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  9. It is given that l varies directly as m. Find m when l is 8.

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  10. If a deposit of Rs 2,000 earns an interest of Rs 500 in 3 years, how m...

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  11. The mass of an aluminium rod varies directly with its length. If a 16 ...

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  12. if 3, x, 6, 18 are in proportion , then x =

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  13. Find the value of x , if y = 2 x − 5 and y = 7 .

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  14. If Naresh walks 250 steps to cover a distance of 200 metres, find the ...

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  15. A car travels a distance of 225 km in 25 litres of petrol. How many li...

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  16. From the following table, determine if x and y are in direct proportio...

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  17. From the following table, determine if x and y are in direct proportio...

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  18. From the following table, determine if x and y are in direct proportio...

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  19. If a and b vary inversely to each other, then find the values of p, q,...

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  20. If a and b vary inversely to each other, then find the values of x, y...

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