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How many litres of a 35% acid solution m...

How many litres of a `35%` acid solution must be added to 500 litres of a `16%` acid solution so that acid content in the resulting mixture may be more than `25%` but less than `30%`?

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More than 450 litres but less than 1400 litres
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CHHAYA PUBLICATION-LINEAR INEQUATIONS-EXERCISE 6 ( Short Answer Type Question)
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  2. Exhibit graphically the solution set of each of the following system o...

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  3. Show that the solution region represented by the following inequations...

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  4. Solve graphically the following system of linear inequations: x-yle1...

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  7. The temperature of solution is to be kept between 104^@F and 113^@F. F...

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  8. A firm produces x units of a product. The cost function C(x) and reven...

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  9. Let x and x+2 be two consecutive odd natural numbers such that x lt26 ...

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  10. Find all possible pairs of consecutive even positive integers such tha...

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  11. Find all possible pairs of consecutive even natural numbers, both of w...

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  12. The marks scored by a student in Physics, Chemistry and Mathematics ar...

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  13. To obtain grade A is an examination a student must score an average of...

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  15. 2250 litres of an acid solution contain 35% acid. Find the range of wa...

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  18. The temperature (t^@C) at a depth x km below the surface of the earth ...

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  19. The temperature (T^@C) at a depth x km below the surface of the earth ...

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  20. How many litres of a 35% acid solution must be added to 500 litres of ...

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