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: 36 27 18 30 36 27 18 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
Number System The sum of three consecutive multiples of 3 is 72. What is the largest number? 36 24 27 21 36 24 27 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27.
Number System Find the number which multiplied by 15 is increased by 196. 14 28 20 26 14 28 20 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,15x - x = 196x = 14
Number System If a number is multiplied by. three-fourth of itself, the value thus obtained is 10800. What is that number ? 260 180 60 120 260 180 60 120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 3x/4 = 10800= x² = 10800 x 4/3 = 14400∴ x = √14400 = 120
Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 673 636 845 724 673 636 845 724 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100 = 636
Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 89 91 75 35 89 91 75 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
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