Question
Two numbers are in the ratio 7:4. After adding 2 and 6
to them respectively the ratio becomes 2:3. Find the bigger number.Solution
Let the two number’s be 7x and 4x. According to the question, => (7x+2)/(4x+6) = 2/3 => 21x + 6 = 8x + 12 => x = 6/13 So, the bigger number will be, => 7x = 7 × (6/13) = 42/13
6 55 91 116 132 ? .
11 34 135 676 4055 ?
640 320 160 ? 40 20
5, 7, 10 , 15 , 21 , 33
18, 25, 33, 42, 52, 63, ?
14, 28, 54, 98, 154, 224
D irection: Which of the following will replace ‘?’ in the following series
9, ‘?’, 1242, 1581, 1783
...76, 82, 158, 240, 398, 638, ?
2556 636 156 ? 6
5 18 44 83 135 200 ...