Number System The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 4/5 5/4 3/10 3/5 4/5 5/4 3/10 3/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/x - x = 9/20 20x2 + 9x - 20 = 0 20x2 + 25x - 16x - 20 = 0 5x(4x + 5) -4(4x + 5) = 0(4x + 5)(5x - 4) = 0x = 4/5
Number System 1827÷ 36 x ?=162.4 4.3 3.2 2.6 1.9 4.3 3.2 2.6 1.9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3.2
Number System A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number? 42 24 84 21 42 24 84 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2/3 x = 28 => x = 4242 * 1/2 = 21
Number System When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 101 97 99 103 101 97 99 103 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 - 732 = 5280 x2 = 5280 + (70+3)2 = 5280 + 4900 + 420 + 9 = 10609= 10000 + 2(100)(3) + 32 = (100 + 3)2x = 100 + 3 = 103.
Number System 35%of ?=242 693 487 394 542 693 487 394 542 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 693
Number System 106 * 106 - 94 * 94 = ? 2000 2400 1904 1906 2000 2400 1904 1906 ANSWER DOWNLOAD EXAMIANS APP
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