Fractions and Decimals If 1.5 x a = 0.04 x b then the value of (b - a) / ( b + a) is ? 73/770 73/77 None of these 730/77 73/770 73/77 None of these 730/77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP a / b = 0.04 / 1.5 = 4 / 150 = 2 / 75∴ Given Exp. (b - a) / ( b + a)= (1- a/b ) / (1 + a/b) = (1- 2 / 75) / (1 + 2 / 75)= ( 73/75 ) / ( 77/75)= 73/77
Fractions and Decimals (0.16)² - (0.12)² = ? .112 11.2 0.0112 1.12 .112 11.2 0.0112 1.12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = a² - b² = (a + b)(a - b)Hence, (0.16)² - (0.12)²= (0.16 + 0.12)(0.16 - 0.12)= 0.28 x 0.04 = 0.0112
Fractions and Decimals 0.15 / (0.5 / 15) = ? 400.5 4.5 None of these 40.5 400.5 4.5 None of these 40.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let Y = 0.15 / (0.5 / 15) = (15/100) / [(5/100) / 15) = 4.5
Fractions and Decimals ( .803 x .647 + .803 x .353 ) = ? 803 .803 8.03 80.3 803 .803 8.03 80.3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Expression = ( .803 x .647 + .803 x .353 )= 803 x (.647 + .353)= .803 x 1 = .803
Fractions and Decimals Correct expression of 6.46 is 646/9999 646/9 646/999 646/99 646/9999 646/9 646/999 646/99 ANSWER DOWNLOAD EXAMIANS APP
Fractions and Decimals Which of the following fraction does not lie between 5/6 and 8/15? 6/7 3/4 2/3 4/5 6/7 3/4 2/3 4/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Converting each of the given fractions into decimal form, we get,5/6 = 0.838/15 = 0.532/3 = 0.663/4 = 0.754/5 = 0.86/7 = 0.85Clearly, 0.85 does not lie between 0.83 and 0.53Hence the required fraction is 6/7.
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