71. The bus fare and train fare of a place from kolkata were Rs. 20 and Rs. 30 respectively. Train fare has been increased by 20% and the bus fare has been increased by 10%. The ratio of new train fare to new bus fare is.
72. The monthly incomes of two families A and B are shown by the following diagrams:
If the income of the family B is Rs. 12000, then the income of family A would be:
If the income of the family B is Rs. 12000, then the income of family A would be:
73. A box filled with paper bundles weights 36kg. If the weight of the box and paper bundles respectively are in the ratio of 3 : 22 then the weight of the papers (in grams) is = ?
74. Two numbers are such that the square of one is 224 less than 8 times the square of the other. If the numbers are in the ratio of 3 : 4, then their values are = ?
75. If (a + b) : (b + c) : (c + a) = 6 : 7 : 8 and (a + b + c) = 14, then the value of c is = ?
76. In a class the number of girls is 20% more than that of the boys. The strength of the class is 66. If 4 more girls are admitted to the class, the ratio of the number of boys to that of the girls is -
77. Two numbers are respectively 20 percent and 50 percent more than a third number. These two numbers are in the ratio.
78. What is the ratio whose terms differ by 40 and the measure of which is $$\frac{2}{7}$$ ?
79. If 5.5 of a = 0.65 of b, then a : b is equal to = ?
80. The ratio of 252.5 : 53 is same as = ?
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