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 If one third of 3/4 of a number is 21. Then find the number? 63 630 840 84 63 630 840 84 ANSWER DOWNLOAD EXAMIANS APP
Number System In a 150-litre mixture of milk and water, the percentage of milk is 84%. How much water should be added so that the percentage of milk becomes 52.5% ? 80 litre 95 litre 90 litre 85 litre 80 litre 95 litre 90 litre 85 litre ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In 150 litre, milk is 84%ie 150 x 84/100 = 126 litre Let us add x litres of waterTherefore, the quantity of mixture = 150 + x∴ 52.5% of (150 + x) = 126 litres 150 + x = 126x100/52.5 = 240 litres∴ x = 240 - 150 = 90 litres
Number System The population of a town increases by 15% in the first year and decreases by 25% in the second year. If its current population is 168480 then what will be its population after two years ? 145214 145714 145914 145314 145214 145714 145914 145314 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Population of the town= 168480 x 115/100 x 75/100= 145314
Number System When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 99 103 97 101 99 103 97 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 - 732 = 5280 x2 = 5280 + (70+3)2 = 5280 + 4900 + 420 + 9 = 10609= 10000 + 2(100)(3) + 32 = (100 + 3)2x = 100 + 3 = 103.
Number System 1260 x 1.45 - 888 x 1.75 = ? 295 256 367 273 295 256 367 273 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1260 x 1.45 - 888 x 1.75= 1827 - 1554 = 273
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