Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 91 89 35 75 91 89 35 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number ? Rs. 945 Rs. 986 Rs. 1054 Rs. 926 Rs. 945 Rs. 986 Rs. 1054 Rs. 926 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.78% of x - 59% of x = 323= 78x - 59x/100 = 323= 19x/100 = 323∴ x = 323 x 100/19 = 1700= 62% of 1700 = 1700 x 62/100 = 1054
Number System The sum of the ages of a son and father is 65 years. After 5 years the age of father will be double of the age of son. What is the age of son ? 18 years 20 years 19 years 17 years 18 years 20 years 19 years 17 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the age of the son be x and the age of the father be y.Therefore, x + y = 65 ..........(i)or, 2 x (x + 5) = (y + 5)or, 2x + 10 = y + 5or, 2x - y = 5 ...................(ii)From equations (i) and (ii), x = 20, y = 45
Number System In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient? 13 0 20 12 13 0 20 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = (12 * 35) = 420Correct quotient = 420/21 = 20
Number System Find the least number with which 16200 should be multiplied, to make it a perfect cube. 360 45 48 36 360 45 48 36 ANSWER DOWNLOAD EXAMIANS APP
Number System 2536+4851—?=3450+313 4567 5243 6784 3624 4567 5243 6784 3624 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3624
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