Question
At present Meena is eight times her daughter’s
age. Eight years from now, the ratio of the ages of Meena and her daughter will be 9 : 2 respectively. What is the Meena’s present age?Solution
Let the age daughter’s age = x Meena’s age = 8x According to the question, (8x+8)/(x+8) = 9/2 ⇒ 16x + 16 = 9x + 72 ⇒ 16x - 9x = 72 – 16 ⇒ 7x = 56 ⇒ x = 8 ∴ Meena’s present age = 8 × 8 = 64 years.
251, 130, 274, ?, 301, 76Â
What will come in place of the question mark (?) in the following series?
132, 101, 130, ?, 126, 109
What will come in place of the question mark (?) in the following series?
110, 120, ?, 146, 162, 180
5, 5, 15, 75, ?, 4725
80    81.5    83.5     ?     89      92.5
...- What will come in place of the question mark (?) in the following series?
6, 24, 60, ?, 210, 336 14, 34, 19, 29, 24, ? , 29, 19
18Â Â Â 19Â Â Â 34Â Â Â 111Â Â Â Â 428Â Â Â Â 2165Â Â Â Â ?
...14, 20, 29, 44, 65, ?
21, 28, 39, 52, ?, 88