Number System If the sum of one-half of a number exceeds one-third of that number by 7 1/3, the number is: 15 20 18 30 15 20 18 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,(1/2 x + 1/5 x) - 1/3 x = 22/311/30 x = 22/3x = 20
Number System 16.23 x 12.9 + 17.32 = ? 226.687 236.687 246.687 None of these 226.687 236.687 246.687 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687
Number System 6.4 x 8.5 x 25/3.2 x 12.5 = ? 4.5 3.4 2.3 5.6 4.5 3.4 2.3 5.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
Number System Twenty times a positive integer is less than its square by 96. What is the integer? 24 20 Cannot be determined 30 24 20 Cannot be determined 30 ANSWER DOWNLOAD EXAMIANS APP
Number System If R2 = S3 = K, where R, S and K are integers. Find the smallest positive integral value of K. (Greater than 1) 88 54 75 64 88 54 75 64 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 64
Number System The difference between 45% of a number and 18% of the same number is 145.8. What is 30% of that number ? 141 188 162 245 141 188 162 245 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.45% of x - 18% of x = 145.8∴ x/100 (45 - 18) = 145.8∴ x = 145.8 x 100/27 = 540∴ 30% of 540 = 540 x 30/100 = 162
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