Question
The following questions each present two quantities,
Quantity I and Quantity II. Compare the values of the two quantities and determine their relationship. Quantity I: The current age ratio of M to N is 2 : 3. N's age 3 years from now will be 17 years more than M’s age 3 years ago. Determine M’s present age. Quantity II: X’s current age is 1/3 of his father’s present age. His mother is currently 6 years younger than his father. If the average age of all three is 26, determine the age of X’s sister, who is 2 years younger than X.Solution
ATQ, Quantity I: Let the present age of M = 2x and present age of N = 3x According to the question, (3x+3)-(2x-3)=17 3x+3-2x+3=17 x=11 Present age of M = 22 years Quantity II: Let X's present age = x His father's age = 3x His mother's age = 3x-6 According to the question, X+3x+3x-6 = 26×3 7x = 78+6 = 84 x = 12 Present age of his sister = 10 years
{(5/8) + (4/5)} × (?/19) = 33
5 + 2 × 3 ÷ (3 × 2) ÷ 4
110 ÷ 5.5 + (?)3 ÷ 12 = 20(2/3)
√256 * 4 – 30% of 190 + ? = 110% of 220
56 × 18 + ? × 21 – 49 × 12 = 63 × 26
The value of 5³ × 5⁴ × 5² = ?
Simplify the following expression:
((32)4 - 1)/33×31× (210+1)
(165 × 12) ÷ 45 + 110 = ? × 2
- What will come in place of the question mark (?) in the following questions?
144÷12+18×2=? 172 - 92 + 121 - 74 = ?