Ans 1. Let the ten digit's and the unit's digit of the number be x and y respectively .
1/4 ( 10x + y) = x + y and
10y + x = 10x + y + 27
solving the two equation we get x =3 and y = 6.
Hence, the number is 36.
1/4 ( 10x + y) = x + y and
10y + x = 10x + y + 27
solving the two equation we get x =3 and y = 6.
Hence, the number is 36.
Ans 2. let the man's present age be x and his son's present age be y.
. . x + 10 = 2 ( y + 10) and
x -2 = 4 ( y - 2)
From the above equation we get x + y= 34.
. . x + 10 = 2 ( y + 10) and
x -2 = 4 ( y - 2)
From the above equation we get x + y= 34.
Ans 3.
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Ans 4.
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Ans 5.
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Ans 6.
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Ans 8.
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Ans 8.
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Ans 9. In selling 1 kg of sugar the grocer gains the cost price of 0.065 kg of sugar.
. . In selling 130 kg he gains cost price of 130 x 0.065 kg of sugar.
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Ans 10.
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Ans 8.
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Ans 8.
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Ans 9. In selling 1 kg of sugar the grocer gains the cost price of 0.065 kg of sugar.
. . In selling 130 kg he gains cost price of 130 x 0.065 kg of sugar.
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Ans 10.
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