Fractions and Decimals If √5 = 2.24, then the value of 3√5 / 2√5 - 0.48 is ? 168 16.8 None of these 1.68 168 16.8 None of these 1.68 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 If a fraction is multiplied by itself and then divided by the reciprocal of the same fraction, the result is 18 26/27. Find the fraction. 9 2/3 5 2/3 2 2/3 7 2/3 9 2/3 5 2/3 2 2/3 7 2/3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP If the required fraction be P According to the question (P x P) / (1/P) = 18 26/27⇒ P³ = 512/27∴ P = 8/3 = 2 2/3
Fractions and Decimals The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.3 2013 2012 2011 2014 2013 2012 2011 2014 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose commodity X wil cost 40 paise more than Y after Z years.Then, (4.20 + 0.40Z) - (6.30 + 0.15Z) = 0.40 0.25Z = 0.40 + 2.10 Z= X will cost 40 paise more than Y 10 years after 2001 . i.e in 2011
Fractions and Decimals Correct expression of 6.46 is 646/99 646/999 646/9 646/9999 646/99 646/999 646/9 646/9999 ANSWER DOWNLOAD EXAMIANS APP
Fractions and Decimals 8.32 x 0.999 = ? 8311.68 8.31168 831.168 83.1168 8311.68 8.31168 831.168 83.1168 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given expression = 8.32 x 0.999= 8.32 x (1-0.001) = 8.32 - 8.32 x 0.001=8.32 - .00832 = 8.31168
Fractions and Decimals What decimal of an hour is a second 0.0025 0.0028 0.0027 0.0026 0.0025 0.0028 0.0027 0.0026 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1 / (60 * 60) = 1 / 3600 = .0027
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