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A two-digit number is such that the prod...

A two-digit number is such that the product of its digits is 20. If 9 is added to the number the digits interchange their places. Find the number.

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RD SHARMA ENGLISH-PAIR OF LINEAR EQUATIONS IN TWO VARIABLES-All Questions
  1. The sum of two numbers is 1000 and the difference between their square...

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  2. A two-digit number is 3 more than 4 times the sum of its digits. If 18...

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  3. A two-digit number is such that the product of its digits is 20. If 9 ...

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  4. Seven times a two-digit number is equal to four times the number ob...

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  5. The sum of a two digit number and the number formed by interchanging ...

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  6. The sum of a two digit number and the number formed by interchanging ...

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  7. A two digit number is obtained by either multiplying sum of digits ...

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  8. If three times the larger of the two numbers is divided by the smaller...

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  9. The sum of a two digit number and the number obtained by reversing the...

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  10. In a two digit number, the ten’s digit is three times the unit’s digit...

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  11. 4 tables and 3 chairs, together, cost Rs. 2,250 and 3 tables and 4 ...

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  12. Reena has pens and pencils which together are 40 in number. If she has...

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  13. 7 audio cassettes and 3 video cassettes cost Rs. 1110, while 5 audio ...

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  14. A man has only 20 paise coins and 25 paisa coins in his purse. If h...

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  15. In a two digit number, the unit’s digit is twice the ten’s digit. If 2...

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  16. Sum of two numbers is 35 and their difference is 13. Find the numbers.

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  17. On selling a T.V. at 5% gain and a fridge at 10% gain, a shopkeeper ...

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  18. A and B each have a certain number of mangoes. A says to B, “if you ...

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  19. Show that x=2,\ \ y=1 is a solution of the system of simultaneous l...

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  20. Show that x=2,\ \ y=1 is not a solution of the system of simultaneo...

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