# Aptitude - Percentages Online Quiz

#### Quantitative Aptitude Course in Tamil

87 Lectures 22.5 hours

Following quiz provides Multiple Choice Questions (MCQs) related to Percentages. 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 - 88% of 370 + 24% of 210 - ? = 118

A - 258

B - 298

C - 320

D - 18

### Explanation

```Let the unknown value is p
88% of 370 + 24% of 210 - p = 118
p = 325.60 + 50.40 - 118
= 258```

Q 2 - If a number p is 10% less than another number q and q is 10% more than 125, then p is equal to?

A - 123

B - 123.75

C - 132.50

D - 132.25

### Explanation

```q = 125 + 10% of 125 = 137.50
p = 137.50 - 10% of 137.50 = 123.75```

Q 3 - In a competitive examination in Zone A, 6% candidates got selected from the total appeared candidates. Zone B had an equal number of candidates appeared and 7% candidates got selected with 80 more candidates got selected than A. What was the number of candidates appeared from each Zone?

A - 8000

B - 9000

C - 7600

D - 9800

### Explanation

```Let p be the number of candidates appeared from each zone.
Then, 7% of p - 6% of p = 80
p = 80 x 100 = 8000```

Q 4 - Suresh spends 24% of his monthly income on food and 15% on the education of his children. Of the remaining salary, he spends 25% on entertainment and 20% on conveyance. He is now left with Rs. 10736. What is the monthly salary of Suresh?

A - Rs. 32000

B - Rs. 30000

C - Rs. 29000

D - Rs. 33500

### Explanation

```Let z be the monthly salary of Sameer.
[100-(25 + 20)]% of [100 - (24 + 15)]% of x = 10736
→ 55% of 61% of x = 10736
Rs. 32000```

Q 5 - The monthly salary of Abdul is Rs 60000. He spend 20% of it on the education of his children, 25% on house rent, 5% on travels, 30% on food, 8% on miscellaneous items and rest he saves for the future. Find his savings.

A - 7000

B - 7200

C - 7500

D - 8000

### Explanation

```Total expenditure = (20 + 25 + 5 + 30 +8)% = 88%
Savings = 100% - 88% = 12%
=> His savings = 12/100 * 60000
= 7200```

Q 6 - A student has to secure minimum 35% marks to pass in an examination. If he gets 200 marks and fails by 10 marks, then the maximum marks are

A - 300

B - 400

C - 500

D - 600

### Explanation

```Let the maximum marks be x.
According to the question,
35% of x = 200 + 10
Or, x = 600```

Q 7 - 50% of a number when added to 50, is equal to a number .the number is

A - 100

B - 125

C - 140

D - 150

### Explanation

```50 + 50% of x =x
x - 1/2x = 50
x=100```

Q 8 - A student who secures 30% marks in an exam fails by 30 marks .Another student who secures 35% marks gets 42 marks more than required to pass .the percentage of marks required is

A - 32.08%

B - 22.05%

C - 29.33%

D - 35%

### Explanation

```30% of x + 30= 35% of x -42
Or 5% of x =72
=>x=1440
Pass marks =30% of 1440 +30=432+30=462
Pass percentage = 462/1440*100=32.08% ```

Q 9 - ?% of 24 = 0.72

A - 10.5

B - 11.5

C - 12.5

D - 13.5

### Explanation

```Let x% of 24 = 0.72. Then,
(x/100*24)=0.72= 72/100=>24x=72 =>x=3.```

Q 10 - 72% of the students of a certain class took Biology and 44% took Mathematics. If each student took at least one subject from Biology or Mathematics and 40 took both, then the total number of students in the class is

A - 200

B - 240

C - 250

D - 320

### Explanation

```Let the number of students in the class be 100.
∴ Number of students in Biology = 72 and number of students in Maths = 44.
∴ Number of students opting for both the subjects = 72 + 44 � 100 = 16
When 16 students opt for both the subjects, total number of students = 100
∴ When 40 students took both the subjects, total number of students = (100/16)*40 = 250```

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