Number System One-eighth of a number is 76. What will be 54% of the number ? 321.32 328.32 332.32 318.32 321.32 328.32 332.32 318.32 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, 1/8 of x = 76Therefore, x = 60854% of 608 = 608 x 54/100 = 328.32
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 ? 17 years 20 years 18 years 19 years 17 years 20 years 18 years 19 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 64% of 2650+40% 0f 320=? 2096 1824 1578 1247 2096 1824 1578 1247 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 146 179 124 163 146 179 124 163 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
Number System 6.4 x 8.5 x 25/3.2 x 12.5 = ? 5.6 3.4 4.5 2.3 5.6 3.4 4.5 2.3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
Number System 7432 ÷ 32 x ? = 2787 12 21 78 41 12 21 78 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7432/32 x ? = 2787= ? = 2787 x 32/7432 = 12
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