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Fractions and Decimals

Fractions and Decimals
50.8 / 2540 = ?

0.02
0.002
None of these
0.0002

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

50.8 / 2540 = 508 / 25400 = 2 / 100 = .02

Fractions and Decimals
The value of 47 / 10000 is ?

0.0047
0.47
0.00047
0.047

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

47/10000 = .0047

Fractions and Decimals
The rational number for recurring decimal 0.125125.... is:

125/100
125/999
125/99
125/1000

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

                           _0.125125... = 0.125 =125/999

Fractions and Decimals
(369.99)² = ?

1369
1369 x 10
None of these
1369 x 10²

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

1369 x 10²

Fractions and Decimals
There are two fractions such that fraction X is thrice the fraction Y and their product is 25/12. Which of the following is equal to Y?

5/6
9/10
3/4
7/8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let X and Y are given fractions.Given that, fraction X is thrice the fraction Y;i.e., X = 3Y ...(1)And their product = X x Y = 25/12Sub. eqn (1) in above,(3Y)x(Y) = 25/123(Y²) = 25/12(Y²) = 25/36Y = 5/6Hence the required fraction is 5/6.

Fractions and Decimals
A person was asked to state his age in years. His reply was , "Take my age 3 years hence, multiply it by 3 and subtract 3 times my age 3 years ago and you will know how old I am." What was the age of

19
16
17
18

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the present age of person be   x years.Then, 3(x + 3) - 3(x - 3 ) = x  <=> (3x + 9) - (3x - 9) = x  <=> x = 18

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