Number System If a number is subtracted from its square we get 272. Find the number? 14 24 17 22 14 24 17 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System The sum of the present age of a father and a son is 60 years. Five years before, the age of the father was four times that of son. What is the present age of the son ? 18 years 25 years 21 years 15 years 18 years 25 years 21 years 15 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the father's age be x and son's age yTherefore, x + y = 60 ....................(i)Five years back, (x - 5) = 4 (y - 5)x - 4y = - 15 ......................(2)Solving (1) and (2), x = 45 and y = 15
Number System 56.21 +2.36+5.41 —21.4+1.5=? 54.08 44.08 64.08 34.08 54.08 44.08 64.08 34.08 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 44.08
Number System (444 x 44 x 4) ÷ 40 ? 2153.6 1853.6 2053.6 1953.6 2153.6 1853.6 2053.6 1953.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 444 x 44 x 4/40 = 1953.6
Number System A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number? 21 24 84 42 21 24 84 42 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2/3 x = 28 => x = 4242 * 1/2 = 21
Number System Two numbers are in the ratio 3:5. If 9 be subtracted from each, they are in the ratio of 9:17. The first number is: 30 18 36 27 30 18 36 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
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