Percentages: Aptitude Questions with Answers – Free Practice!

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Quiz Questions

Q. 1 Find the value: 30% of 700

220 210 225 230

30% of 700 = (30 * 700 )/100 = 210

Q. 2 A beauty e-commerce startup marks its products at a price 80% above the cost. During Diwali sale, firm runs a 25% discount on the marked price. Find out firm’s overall profit percentage during Diwali Sale?

15% 25% 35% 50%

Let the cost price be 100.
Marked price =100+80=180 .
Selling price after 25% discount =

180 \times 0.75 = 135

$180 \times 0.75 = 135$ .
Profit percentage =

\frac{135 - 100}{100} \times 100 = 35 %

$\frac{135 – 100}{100} \times 100 = 35\%$

It is advisable to remember important conversions for such questions.

Q. 3 Imagine the price of your favourite shirt gets a 25% hike one day and a 20% markdown the next. What’s the net percentage increase in its price?

0% 2% 5% 10%

Let the original price be 100.
After a 25% increase: $100 \times 1.25 = 125$ .
After a 20% decrease: $125 \times 0.80 = 100$ .
The net change is 0%.

Q. 4 In a class, 40% of the students passed in Mathematics, and 50% passed in Science. If 25% passed in both subjects, what percentage of students unfortunately failed in both subjects?

25% 35% 45% 50%

Let total students =100 .
Passed in Math =40, in Science =50, in both =25.
So, passing in at least one subject =40+50−25=65.
Failing in both subjects =100−65=35%.

Q. 5 A person carefully budgets his salary: 40% goes to rent, 25% to groceries, 15% to transportation, and the rest goes into savings. If his monthly salary is 5000, how much does he save?

1500 750 2000 1000

Total expenses =40%+25%+15%=80%.
Savings =100%−80%=20%.
Amount saved = $5000 \times 0.20 = 1000$ .

Q. 6 Sixty percent of a number is 240. Can you crack the code and find out what 75% of that number is?

250 300 360 400

Let the number be x.
Then, 0.6x=240.
So, $x = \frac{240}{0.6} = 400$ .
Then, $0.75 \times 400 = 300$ .

Q. 7 A product’s price bounces around: it’s increased by 10% one month but reduced by 10% the next. What’s the net impact on the price after these changes?

0% 1% increase 1% decrease 2% decrease

Let the original price be 100.
After a 10% increase: $100 \times 1.10 = 110$ .
After a 10% decrease: $110 \times 0.90 = 99$ .
Net percentage change = $\frac{99 – 100}{100} \times 100 = -1\%$ .

Q. 8 At a college, 30% of students are football fans, 40% enjoy basketball, and 20% love both. What percentage of students prefer neither sports?

20% 30% 40% 50%

Total students =100.
Students who prefer at least one sport = 30 + 40 – 20 = 50.
Students who prefer neither sport = $100 – 50 = 50\%$ .

Q. 9 Price of a newly launched luxury bag increases by 20% and becomes $600 few days after the launch. What was its price during the launch day?

450 500 480 520

Let the original price be x.
Then $x \times 1.20 = 600$ .
So, $x = \frac{600}{1.20} = 500$ .

Q. 10 A lucky employee celebrates two consecutive salary hikes: 15% first, followed by another 10%. What’s the total percentage increase in their salary?

25% 26.5% 27.5% 28%

Total percentage increase = $15 + 10 + \frac{15 \times 10}{100} = 26.5\%$ .

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Q. 11 Find the value: 50% of 440

210 230 235 220

50% of 440 = (50 * 440 )/100 = 220

Q. 12 What is the value of: 70% of 70% of 390

191.1 201.1 206.1 211.1

70% of 70% of 390 = (70/100) * (70/100) * 390 = 191.1

Q. 13 A laptop was priced at ₹70000, and its price increased by 10%. Find the final price of the laptop.

57000 67000 77000 87000

Calculate the final price of the laptop: 70000 *(1+10/100) = 77000

Q. 14 In Gotham City, last year’s tourism revenue accounted for 20% of the city’s overall revenue, with the rest, totaling $600,000, coming from manufacturing. This year, tourism revenue fell by 60%, while manufacturing revenue rose by 150%. What percentage of this year’s manufacturing revenue is the revenue from tourism?

25% 20% 10% 4%

Let $x$ be the total revenue last year. Then, 20% of $x$ is: 0.20x

The remaining revenue from manufacturing is: $ 600,000

So, 0.20x + 600,000 = x

Solving for $x$ :

x = $ 750,000

Therefore, tourism revenue last year was:

0.20*750,000) = 150,000

This year, tourism revenue declined by 60%, so it is now:

150,000 * 0.40 = 60,000

Manufacturing revenue increased by 150%, so it is now:

600,000 * 2.50 = 1,500,000

Therefore, tourism revenue is now what percent of manufacturing revenue?

$\frac{60,000}{1,500,000} \times 100 = 4%$

Q. 15 Bob weighs 80 kgs and plans to take 20 mcg of a certain allergy medication. The medication label recommends a dosage of 3 mcg for every 10 kgs of body weight. By what percentage should Bob increase his intended dosage to meet the prescribed amount?

10% 15% 20% No change

Prescribed dosage = 3*80/10 = 24mcg

Increase in dosage = (24-20)/20*100 = 20%

Q. 16 Riya’s monthly income is ₹60,000. Based on the pie chart, how much is she saving every month?

12000 15000 18000 20000

Saving = 25% of 60000 = 25*60000/100 = 15000

Q. 17 Based on the following graph, which subject had the highest percentage improvement from Term 1 to Term 2?

Strength of Material AI in Robotics Thermodynamics All are same

Strength of Material = (15/60)*100 = 25%

AI in Robotics = 7/70*100 = 10%

Thermodynamics = (20/65)*100 = 30.8%

Q. 18 Given data table shows India’s GDP numbers. What had been the change in India’s real GDP in 2023 compared to 2018?

Year	GDP nominal (in $10^{11}$ Dollars)	GDP Real (in $10^{11}$ in dollars)
2023	35.7	32.1
2022	33.5	29.7
2021	31.7	27.8
2020	26.8	25.3
2019	28.3	26.9
2018	27.0	25.9

24% 14% 34% 4%

Real GDP change % = (32.1-25.9)/25.9*100 = 24%

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