Fractions and Decimals ? % of 10.8 =32.4 600 300 100 500 600 300 100 500 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let k % of 10.8=32.4 ⇒ (k x 10.8) / 100 = 32.4⇒ k = (32.4 x 100 )/10.8 = 300
Fractions and Decimals If √5 = 2.24, then the value of 3√5 / 2√5 - 0.48 is ? 1.68 168 16.8 None of these 1.68 168 16.8 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given expression = 3√5 / 2√5 - 0.48= (3 x 2.24) / (2 x 2.24) - 0.48= 6.72 / 4.48 - 0.48 = 6.72 / 4 = 1.68
Fractions and Decimals Which of the following fractions is greater than 3/4 and less than 5/6? 1/2 4/5 2/3 9/10 1/2 4/5 2/3 9/10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/4 = 0.75, 5/6= 0.833, 1/2= 0.5, 2/3= 0.66,4/5= 0.8, 9/10= 0.9. Clearly, 0.8 lies between 0.75 and 0.833.4/5 lies between 3/4 and 5/6.
Fractions and Decimals In a village, (5/8)th of the population are adults,half of the adults are male,(4/5)th of adult females are illiterate. if 400 females are illiterate, then the population of the village is ? 200 800 1600 400 200 800 1600 400 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the population of village = N Then, adult's population = 5N/8and adult females = 1/2 x 5N/8 = 5N/16 ∴ illiterate females = 4/5 of adult female population ⇒ 400 = 4/5 x 5N/16 ⇒ N = (400 x 16)/4∴ N = 1600
Fractions and Decimals (.125 + .027) / (.5 x .5 - 1.5 + .09) = ? 80 8 0.8 800 80 8 0.8 800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given expression = [(0.5)³ + (0.3)³] / [(0.5)² - 0.5 x 0.3 + (0.3)²]= [a³ + b³] / [a² - ab + b²]=[(a + b)(a² - ab + b²)]/ [a² -ab + b²]= a+b = 0.5 + 0.3 = 0.8
Fractions and Decimals The value of 47 / 10000 is ? 0.047 0.00047 0.0047 0.47 0.047 0.00047 0.0047 0.47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 47/10000 = .0047
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