Number System If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 77/73 83/77 93/77 73/77 77/73 83/77 93/77 73/77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
Number System What should come in the place of question mark (?) in the number series given below? 158 157 159 160 158 157 159 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 160
Number System If the numberator of a fraction is increased by 50% and denominator by 20% the fraction become 9/15. What was the original fraction ? 12/25 13/25 6/7 3/5 12/25 13/25 6/7 3/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25
Number System In an examination, 68% of the total examinees passed. If the number of failures is 248, the total number of examinees is 640 725 750 775 640 725 750 775 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Failed students are 32% which is 248.∴ Total = 24800/32 = 775
Number System The sum of the present age of a father and a son is 60 years. Five years before, the age of the father was four times that of son. What is the present age of the son ? 25 years 21 years 15 years 18 years 25 years 21 years 15 years 18 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the father's age be x and son's age yTherefore, x + y = 60 ....................(i)Five years back, (x - 5) = 4 (y - 5)x - 4y = - 15 ......................(2)Solving (1) and (2), x = 45 and y = 15
Number System When 102 is reduced from a number, the number gets reduced by 88%. What is that number ? 850 650 750 550 850 650 750 550 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 850
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