Question
8 years ago, the ratio of the ages of Kim and Lee was
7:5. The present age of Ron is 15 years more than one-fourth of Lee’s present age. Find Ron's present age if Kim’s age in 4 years will be 40 years.Solution
Kim and Lee's ages 8 years ago = 7x and 5x Present ages = 7x + 8, 5x + 8 Kim's present age = 40 - 4 = 36 years → 7x = 36 - 8 = 28 → x = 4 Lee's present age = 5(4) + 8 = 28 Ron's present age = (1/4) * 28 + 15 = 22
Simplify the following expression:
What will come in the place of question mark (?) in the given expression?
25% of 1280 + (41 × 4) = ?2Â
If 960 ÷ 16 + 875 ÷ 25 - x + 28 × 6 = 1350 ÷ 18 × 222 ÷ 37, then the value of x is:
What will come in the place of question mark (?) in the given expression?
? = (266 × 276) ÷ (114 × 161) × 17
(165 × 12) ÷ 45 + 110 = ? × 2
535 + ? × 27 - 22 × 20 = 230Â
? = 2640 ÷ {(35% of 1240) – 170}Â
375% of 320 - 80% of 40 ÷ √256 = ?
? = 6.25% of 240 + 25 2 + 17 2 – 16 × 17
What will come in the place of question mark (?) in the given expression?
(√1089 + 84 ÷ 2) % of 348 = 416 - ?
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