Number System The difference between a number and its three-fifth is 50. What is the number? 125 None of these 100 75 125 None of these 100 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x - 3/5 x = 50 => 2/5 x = 50x = (50 * 5)/2 = 125.
Number System 1827÷ 36 x ?=162.4 4.3 1.9 2.6 3.2 4.3 1.9 2.6 3.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3.2
Number System If 5/7 of a number is 145, what is 180% of that number ? 375.4 365.4 355.4 345.4 375.4 365.4 355.4 345.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4
Number System The sum of two numbers is 165 and the difference between them is 9. What is the average of these two numbers ? 85.5 83.5 84.5 82.5 85.5 83.5 84.5 82.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 165x - y = 92x = 174 ∴ x = 87 and y = 78∴ x + y/2 = 165/2 = 82.5
Number System The difference between 68% of a number and 35% of the same number is 1216. What is 28% of the number ? 1027.75 1037.75 1043.75 1031.75 1027.75 1037.75 1043.75 1031.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore 68x / 100 - 35x / 100 = 1216 Therefore x = 1216 x 100 / 33Therefore 28% of x = 28x / 100 = 1216 x 100 / 33 x 28 / 100= 1216 x 100 x 28 / 33 x 1/100 = 1031.75
Number System In a pair of fractions, fraction A is twice the fraction B and the product of two fractions is 2/25. What is the value of fraction A? 1/5 Data inadequate 2/5 1/25 1/5 Data inadequate 2/5 1/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A = 2B => B = 1/2 A, so, AB = 2/25 1/2 A2 = 2/25A2 = 4/25 A = 2/5
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