Percentage is an important chapter of Arithmetic section of Quantitative Aptitude from which in every exam questions are asked. Here we are providing some important percentage questions for your practice. First try to solve these questions on your own and then see the complete solution provided below for better understanding.
Q1. A student multiplied a number by instead of . What is the percentage error in the calculation?
A) 54%
B) 64%
C) 44%
D) 34%
Answer & Solution:
Let the number be= 5×3=15
Wrong Answer= 15× 3/5=9
Correct Answer =15×5/3=25
Percentage Error= (25-9)/25 × 100%=64%
Q2. A team played 40 games in a season and won in 24 of them, what percent of games played did the team win?
A)60%
B)35%
C)70%
D)40%
Answer & Solution:
Games Played=40
Games won=24
Winning Percentage=(24/40) × 100%=60%
Q3. In a college, 40% of the students were allotted group A, 75% of the remaining were given group B and the remaining 12 students were given group C. then the number of students who applied for the group is:
A) 80
B) 92
C) 60
D) 100
Answer & Solution: Correct Answer is A) 80
40%= 285, 75%=3/4
Let, total students =5×4=20
Allotted Group A =20×40%=20× 2/5=8
Allotted Group B = (20-8)×75%=12× 3/4 =9
Remaining =20-(8+9)=3
Therefore, 3 unit ->12 students
1 unit-> 4 students
20 unit -> 80 students
Therefore, 80 students applied.
Q4. Given A is 50% larger than C and B is 25% larger than C, then A is what percent larger than B?
A) 75%
B) 20%
C) 25%
D) 50%
Answer & Solution:
A: C =150:100=3:2 & B:C=125:100=5:4
Therefore, A/C × C/B =3/2 × 4/5 =6/5
Or, A/B= 6/5
Therefore, A is larger than B by = (6-5)/5 × 100%=20%
Q5. A number is increased by 20% and then again by 20%, by what percent should the increased number be reduced so as to get back the original number?
A) 19 11/31%
B) 44%
C) 40%
D) 30 5/9 %
Q6. A number is decreased by 10% and the resulting number is again decreased by 20%, what is the net percentage of decrease?
A) 26%
B) 28%
C) 27%
D) 25%
Q7. A man spends 75% of his income, his income increases by 20% and his expenditure also increases by 10%. The percentage of increases in his savings is:
A) 30%
B)25%
C)50%
D) 60%
Q8. If the income tax is increased by 19%, the net income is reduced by 1%, the rate of income tax is:
A) 4%
B)7.2%
C)5%
D)6%
Q9. If a number is increased by 25% and the resulting number is decreased by 25%, then the percentage increases or decrease finally is:
A) Decreased by 6 1/4%
B) Increased by 6%
C) Increased by 6 1/4%
D) No Change
Q10. Half of 1 percent, written as a decimal is
A) 0.005
B) 0.05
C) 0.2
D) 0.002
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