Fractions and Decimals 0.8 x ? =0.0004 0.0005 0.05 0.005 0.00005 0.0005 0.05 0.005 0.00005 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 0.8y = 0.0004Then,y = 0.0004 / 0.8 = 0.004 / 8= .0005
Fractions and Decimals If 3 is added to the denominator of a fraction, it becomes 1/3 and if 4 be added to its numerator, It becomes 3/4, then fraction is ? 5/12 None of these 3/20 1/16 5/12 None of these 3/20 1/16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the required fraction be p/q∵ p / (q + 3) = 1/3⇒ 3p - q = 3 ...(i)and, (p + 4) / q = 3/4 ⇒ 4p - 3q = -16 ...(ii)Solving these equations, we get p = 5, q = 12∴ Required fraction = 5/12
Fractions and Decimals (0.16)² - (0.12)² = ? 1.12 .112 11.2 0.0112 1.12 .112 11.2 0.0112 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 3 x 0.3 x 0.03 x 0.003 x 30=? 2.430 0.002430 0.02430 0.2430 2.430 0.002430 0.02430 0.2430 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3 x 3 x 3 x 3 x 30 = 2430 ∴ 3 x 0.3 x 0.03 x 0.003 x 30 = 0.002430 (Six places of decimal
Fractions and Decimals When 0.232323.... is converted into a fraction , then the result is 24/99 23/99 25/99 26/99 24/99 23/99 25/99 26/99 ANSWER DOWNLOAD EXAMIANS APP
Fractions and Decimals Two times of the third of three consecutive even integers is three times of the first. Then the second integer is 1 10 7 4 1 10 7 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive three integers be X, X + 2 and X + 4Then, 2(X + 4) = 3XX = 8Now X + 2 = 10The required second integer is 10
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