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A student obtained 60, 62, 64 and 66 mar...

A student obtained 60, 62, 64 and 66 marks in 4 subjects in an examination. Find the minimum marks he should get in 5th subject to have an average of at least 65 marks.

A

`75`

B

`73`

C

`72`

D

`74`

Text Solution

Verified by Experts

The correct Answer is:
`B`
73
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NAGEEN PRAKASHAN-LINEAR INEQUALITIES-EXERCISE
  1. Find all pairs of consecutive even integers both of which are greater ...

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  2. Find all pairs of consecutive even integers both of which are greater ...

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  3. A student obtained 60, 62, 64 and 66 marks in 4 subjects in an examina...

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  4. A student obtained 62 and 48 marks in the first and secound examinati...

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  5. The water aciditiy in a pond is considered normal when the average pH...

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  6. The longest side of a triangle is three times the shortest side and th...

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  7. A man wants to cut three lengths from a single piece of board of lengt...

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  8. A solution is to be kept between 50^(@) F and 68^(@)F . What is the ra...

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  9. A solution is to be kept between 40^(@) C and 60^(@)C . What is the r...

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  10. How many litres of water will have to be added to 1125 litres of the 4...

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  11. A solution of 8% boric acid is to be diluted by adding a 2% boric acid...

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  12. If the cost and revenue function of a product are respectively C(x) = ...

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  13. 2x + 5y ge 10

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  14. x - 2y le 4

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  15. x + 4y gt 8

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  16. 3y - 5x lt 15

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  17. 2x + y ge 0

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  18. 2x + y le 6, x + 2y le 8, x ge 0, y ge 0

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  19. Solve the following system of inequations graphically x + y le 10, ...

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  20. x + y le 10, 4x + 3y le 24, x ge , x ge 0, y ge 0

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