# Aptitude - Decimals & Fractions Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Decimals and Fractions. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz. Q 1 - √(0.144/0.009)=?

A - 1

B - 2

C - 3

D - 4

### Explanation

``` √(0.144/0.009)=√(144/9)=2
```

Q 2 - How many digits are there to the right of decimal in the product of 45.875x323.87?

A - 2

B - 4

C - 5

D - 6

### Explanation

``` 5
```

Q 3 - In a class of 56 students, the number of boys is 3/5 of the girls. Find the number of boys and girls in the class.

A - 21, 35

B - 20, 36

C - 18, 38

D - 16, 30

### Explanation

``` Let the number of girls be X.
Thus X + (3/5)X=56
=> X=35
No. of boys = 56-35=21.
```

Q 4 - Out of a tank which is half full 5 litres of water is drawn out. The tank is now 1/3rd full. what is the capacity of tank in litres?

A - 30

B - 35

C - 25

D - 20

### Explanation

```Let X = capacity of the tank when it is full.
(1/2) x X - 5 = (1/3) x X
=> X=30
```

Q 5 - 15.60 x 0.30 = ?

A - 4.68

B - 0.458

C - 0.468

D - 0.0468

### Explanation

```
Number of decimal places in the product = 2 + 2 = 4.
1560
x30
-----
0000
4680x
-----
46800
-----
∴ 15.60 x 0.30 = 4.68
```

Q 6 - 0.9 / 0.75 = ?

A - 1.4

B - 1.8

C - 1.1

D - 1.2

### Explanation

```
0.9 / 0.75 = 0.90/0.75 = 90/75 = 6/5 = 1.2
```

Q 7 - (6.5 x 4.7 + 6.5 x 5.3) / (1.3 x 7.9 - 1.3 x 6.9) = ?

A - 3.9

B - 39

C - 34.45

D - 50

### Explanation

```
(6.5 x 4.7 + 6.5 x 5.3) / (1.3 x 7.9 - 1.3 x 6.9) = {6.5 x (4.7 + 5.3)} / {1.3 x (7.9 - 1.3)} = (6.5 x 10) / (1.3 x 1) = 50.
```

Q 8 - (0.733 + 0.273) / (0.732 + 0.272 - 0.73 x 0.27)= ?

A - 1

B - 0.4827

C - .73

D - 6

### Explanation

``` As a3 + b3 = (a+b)(a2-ab + b2)
Thus (a3 + b3) / (a2-ab + b2)  = a + b
∴ (0.733 + 0.273) / (0.732 + 0.272 - 0.73 x 0.27) = 0.73 + 0.27 = 1
```

Q 9 - 3.87878787 - 2.595959 = ?

A - 1.20

B - 1.222222

C - 1.272727

D - 1.282828

### Explanation

```
3.878787 - 2.595959 = 3 + 87/99 - 2 - 59/99 = 1 + 28/99 = 1.282828
```

Q 10 - If a tank gets filled by 18 buckets of water where capacity of each bucket is 9 litres. How many buckets are required to fill the same tank if its capacity is 13.5 litres?

A - 12

B - 13.5

C - 24

D - 25

```