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The sum of two digits of a number consis...

The sum of two digits of a number consisting of two digits is 7 . If 27 is added to the number, the number of its digits are interchanged . Find the number.

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25
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CALCUTTA BOOK HOUSE-LINEAR EQUATIONS IN REAL PROBLEMS-EXERCISE-5
  1. sum of the ages of a father and his son is 55 years. After 10 years , ...

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  2. The total cost of 3 kg mustered -oil and 2 kg coconut -oil is Rs. 104....

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  3. The sum of two digits of a number consisting of two digits is 7 . If 2...

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  4. At present , sum of the ages of a father and his son in 46 years . Whe...

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  5. If the length of a rectangle is increased by 3 metres and the breadth ...

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  6. Sum of the numerator and the denominator of a fraction is 13. If 4 is ...

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  7. A man travels a distance in 3 hours with a uniform velocity . If the d...

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  8. If the length of a a rectangular park be increased by 2 metres and the...

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  9. If 2 is subtracted from the numerator and 3 is added to the denominato...

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  10. The sum of the present ages of a mother and her daughter is 55 years. ...

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  11. A number of two digits is 3 more than 4 times of the sum of its digits...

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  12. 5 times of the greater one of two numbers is 2 more than 8 times of th...

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  13. If 2 is added to both the numerator and the denominator of a fraction ...

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  14. The total price of 9 horses and 7 cows is Rs. 3000 and at the same rat...

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  15. A person travels by boat 5 kilometres in 1 hour in still water. The ti...

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  16. Determine a number of three digits such that if the digits of it be re...

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  17. A student starting from his house walks at a speed 2(1)/(2) km/hour ...

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  18. Total price of 3 pens and 4 pencils is Rs. 37. Again , total price of ...

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  19. 2 men and 6 boys together can do a piece of work in 5 days . 8 men and...

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  20. A boat travels up stream 30 kilometres and down -stream 44 kilometres ...

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