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Fractions and Decimals

Fractions and Decimals
If x/y = 0.3, then (2x - y)/(2x + y) = ?

0.15
0.5
0.5
0.25

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x = 0.3y Then, (y - 2x)/(y + 2x)= y - 2(0.3y)/y + 2(0.3y)= y - 0.6y/y + 0.6y= 0.4y/1.6y= 0.4/1.6 = 0.25

Fractions and Decimals
Which of the following fraction is greater than 4/5 and less than 6/7?

2/3
3/4
10/11
5/6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

We have to find X such that 4/5 < X < 6/7Converting each fraction into decimal form, we get:4/5 = 0.86/7 = 0.85We have to find the fraction which is greater than 0.8 and less than 0.85.Now,2/3 = 0.663/4 = 0.755/6 = 0.8310/11 = 0.91Clearly, 0.83 lies between 0.8 and 0.85.Required fraction is 5/6

Fractions and Decimals
3420 / 19 = ( ? / 0.01) x 7

9/40
9/35
9/30
9/45

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let 3420 / 19 = (y / 0.01) x 7Then , y = ( 3420 / 19) x (0.01 / 7) = 180 / 700 = 9/35

Fractions and Decimals
0.6 + 0.66 + 0.066 + 6.606 = ?

7932
7.932
793.2
79.32

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

0.6 + 0.66 + 0.066 + 6.606= 0.600 + 0.660 + 0.066 + 6.660= 7.932

Fractions and Decimals
The value of 47 / 10000 is ?

0.00047
0.0047
0.047
0.47

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

47/10000 = .0047

Fractions and Decimals
( 20 + 8 x 0.5 ) / ( 20 - ? ) = 12

20
16
14
18

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let (20 + 8 x 0.5) / ( 20 - y) =12Then, 24 =12 x (20 - y)∴ 12y = 216⇒ y = 18

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