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Fractions and Decimals

Fractions and Decimals
( 0.5 x 0.5 x 0.5 x 0.6 x 0.6 x 0.6 ) / ( 0.5 x 0.5 - 0.3 + 0.6 x 0.6 ) = ?

111.1
11
11.1
1.1

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given expression = [(0.5)³ + (0.6)³ ] / [(0.5)² - 0.5 x 0.6 + (0.6)²]= (a³+b³) / ( a²-ab+b²)= a + b= 0.5 + 0.6= 1.1

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?

9/10
5/6
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
The number 0.127 is how much greater than 1/8 ?

1/300
1/800
1/500
1/1000

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

0.127 expressed as a fraction = 127/10001/8 can also be expressed as (1 x 125) / (8 x 125) = 125/1000The difference is 2/1000, which is 1/500

Fractions and Decimals
3889 + 12.952 - ? = 3854.002

4.795
4795
47.95
479.5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let 3889 + 12.952 - x = 3854.002.Then x = (3889 + 12.952) - 3854.002  = 3901.952 - 3854.002  = 47.95.

Fractions and Decimals
Find the sum 3/10 + 5/100 + 8/1000 in decimal form ?

35.8
3.58
0.358
None of these

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3/10 + 5/100 + 8/1000= 0.3 + 0.05 + 0.008 = 0.358

Fractions and Decimals
What decimal fraction is 40 ml of a litre ?

.0004
.04
4
.004

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Required fraction = 40/1000= 4/100 = .04

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