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

The sum of the digits of a number consisting of three digits is 12. The middle digit is equal to half of the sum of the other two. If the order of the digit be reversed, the number is diminished by 198. Find the number.

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CHETANA PUBLICATION-Linear equations in two variables-EXERCISE
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  3. Solve the following simultaneous equations: x+y=8,x-y=2.

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  4. Find the value of the following determinant: |(7/8,5/3),(3/2,1/2)|

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  5. Find the value of the following determinant: |(3,-1),(1,4)|

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  6. The perimeter of rectangle is 40 cm. The length of rectangle is 2 cm m...

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  7. Solve 15x+17y=21,17x+15y=11.Complete the following activity.

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  8. A boat takes 6 hours to travel 8km up stream and 32 km down stream and...

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  9. Solve the following simultaneous equations: 2x+3y=12,x-y=1.

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  10. The sum of two digit number and the number obtained by reversing the o...

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  11. The weight of a bucket is 15kg, when it is filled with water upto 3/5 ...

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  12. Abdul travelled 300 km by train and 200 km by taxi, it took him 5 hour...

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  13. When the son will be as old as his father today, the sum of their ages...

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  14. The forewheel of a carriage makes 6 revolutions more than the rearwhee...

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  15. Find the area of the triangle formed by the following lines and X axis...

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  16. Solve 2^x+3^y=17,2^(x+2)-3^(y+1)=5

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  17. A person deposits ₹x in savings bank account at the rate of 5% per ann...

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  18. The sum of the digits of a number consisting of three digits is 12. Th...

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  19. A train covered a certain distance at a uniform speed. If the train wo...

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  20. Solve:(a-b)x+(a+b)y=a^2-2ab-b^2 and (a+b)(x+y)=a^2+b^2

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