Number System 450% of a number is 4725. What is 82% of that number ? 871 861 851 841 871 861 851 841 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 450/100 = 4725= x = 4725 x 100/450 = 1050∴ 82% of 1050 = 1050 x 82/100= 861
Number System The sum of the two digits of a two-digit number is 15 and the difference between the two digits of the two digit number is 3. What is the product of the two digits of the two digit number ? None of these 14 36 54 None of these 14 36 54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10 x + yWhere x > yAccording to the question,x + y = 15 and x - y = 3Solving both the equations,x = 9, y = 6∴ x x y = 9 x 6 = 54
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 12/5 25/144 144/25 5/12 12/5 25/144 144/25 5/12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
Number System If a number is subtracted from its square we get 272. Find the number? 22 24 17 14 22 24 17 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System Twenty times a positive integer is less than its square by 96. What is the integer? 20 Cannot be determined 30 24 20 Cannot be determined 30 24 ANSWER DOWNLOAD EXAMIANS APP
Number System The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number ? Rs. 1054 Rs. 926 Rs. 945 Rs. 986 Rs. 1054 Rs. 926 Rs. 945 Rs. 986 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.78% of x - 59% of x = 323= 78x - 59x/100 = 323= 19x/100 = 323∴ x = 323 x 100/19 = 1700= 62% of 1700 = 1700 x 62/100 = 1054
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