61. If 60% A = $$\frac{3}{4}$$ of B, then A : B is
62. Which of the following represents ab = 64?
63. The ratio of boys and girls in a club is 3 : 2. Which of the following could be the actual number of members ?
64. If m : n = 3 : 2, then (4m + 5n) : (4m - 5n) is equal to = ?
65. The sum of two numbers is 40 and their difference is 4. The ratio of the numbers is = ?
66. How many sides does a regular polygon have whose interior and exterior angle are in the ratio 2 : 1 ?
67. Which of the following is the lowest ratio ?
68. $$\frac{3}{4}$$ : $$\frac{1}{2}$$ :: 27y : ? Solve this -
69. Harsha is 40 years old and Ritu is 60 years old. How many years ago was the ratio of their ages is 3 : 5 ?
70. Two numbers are in the ratio $$1\frac{1}{2}$$ : $$2\frac{2}{3}$$ When each of these is increased by 15, they become in the ratio $$1\frac{2}{3}$$ : $$2\frac{1}{2}$$ . The greater of the numbers is = ?
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