Question
How old is Jack? I. After 20 years, Jack will be
twice as old as he is today. II. Five years ago, Jack was ¾ times of his present age. Each of the following questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give the answer.Solution
Let Jack’s current age be x years, From I, x + 20 = 2x x = 20 From II, x – 5 = ¾ x 4x – 20 = 3x x = 20 Thus, either of statements alone is sufficient to answer the given question.
36.76 + 2894.713 + 34965.11 =?
(320 + 342 + 530 + 915) Γ· (20 + 22 β x + 18) = 43, then the value of x is:
13 X ? = 85 X 4 + β81 + 2
β 729 Γ 5 β 220 % of 15 + ? = 120% of 160
(2197)1/3 + (18)2 β 121 = ? β 69 Γ 5
447.8 × 441.2 ÷ 445 = 44 × 44?
(?) + (35)2 = (140)2 – (80)2 + 20% of 5480
7, 8, 12, 21, 37, ?
- Determine the final value of this expression:
(1/5) of {5β΄ - 24 Γ 14 + 12 Γ 18 - 10.5 of 10Β²} 7.4 × 8.2 + 3.5 × 4.5 = ? + 11.5 × 2.5