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Quant – Percentage – Set 2
Read the following instructions carefully
- The test contains 10 questions.
- Each question has 4 options, of which only one is correct.
- You have to finish the test in 8 minutes.
- You are awarded 1 mark for each correct answer, and 0.25 marks are deducted for each wrong answer.
- There is no negative marking for questions you do not attempt.
- You may pause the test at any time and resume where you left off.
- Your marks, the correct answers and an explanation for every question are shown as soon as you submit.
- You can take this test as many times as you like. A fresh set is drawn each time you reload the page.
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Review this set's questions and answers (opens after you submit the test)
This free practice set from AndamanJobs has 10 questions to be solved in 8 minutes. Every question is listed below with four options. Open Show answer and explanation under a question to see the correct option and why it is correct. Try the timed test above first, then use this list to revise the questions you got wrong.
- If the height of a cylinder is increased by 15% and the radius of its base is decreased by 10% then the percentage change in its curved surface area is :
- A. 2.5% decreased
- B. 3.5% decreased
- C. 2.5% increased
- D. 3.5% increased
Show answer and explanation
Answer: D. 3.5% increased
Curved surface area = 2πrh. Change factor = 1.15 × 0.90 = 1.035, so it increases by 3.5%.
- Tickets for all but 100 seats in a 10,000 seat stadium were sold. Of the tickets sold, 20% were sold at half price and the remaining tickets were sold at the full price of Rs.20. The total revenue from the ticket sales, (in Rs.) was :
- A. 178200
- B. 158400
- C. 198000
- D. 180000
Show answer and explanation
Answer: A. 178200
Tickets sold = 9,900. At half price: 20% = 1,980 × Rs 10 = 19,800. Full price: 7,920 × Rs 20 = 1,58,400. Total = Rs 1,78,200.
- A number is divided into two parts in such a way that 80% of 1st part is 3 more than 60% of 2 nd part and 80% of 2nd part is 6 more than 90% of the 1st part. Then the number is :
- A. 125
- B. 130
- C. 135
- D. 145
Show answer and explanation
Answer: C. 135
Let the parts be x and y. 0.8x = 0.6y + 3 and 0.8y = 0.9x + 6. Solving gives y = 75 and x = 60, so the number is 135.
- Bhuvnesh spends 30% of his salary on food and donates 3% in a Charitable Trust. He spends ₹Rs. 2,310 on these two items, then total salary for that month is:
- A. ₹8000
- B. ₹7000
- C. ₹6000
- D. ₹9000
Show answer and explanation
Answer: B. ₹7000
33% of the salary = Rs 2,310, so the salary = 2310 × 100/33 = Rs 7,000.
- The population of a town is 3,11,250. The ratio of women to men is 43 : 40. If there are 24% literate among women and 10% illiterate, among men, the total number of literate persons in the town is:
- A. 1,75,700
- B. 1,73,700
- C. 1,73,200
- D. 1,70,700
Show answer and explanation
Answer: B. 1,73,700
Women = 1,61,250 and men = 1,50,000. Literate women = 24% of 1,61,250 = 38,700. Literate men = 90% of 1,50,000 = 1,35,000. Total = 1,73,700.
- The value of a machine depreciates by 5% every year. If its present value is Rs.2,00,000, its value after 2 years will be:
- A. ₹1,80,500
- B. ₹2,10,000
- C. ₹1,99,000
- D. ₹1,80,000
Show answer and explanation
Answer: A. ₹1,80,500
Value after 2 years = 2,00,000 × 0.95 × 0.95 = Rs 1,80,500.
- In a big garden 60% of the trees are coconut trees. 25% of the number of coconut trees are mango trees and 20% of the number of mango trees are apple trees. If the number of apple trees in the garden is 1440 then find the total number of trees in the garden:
- A. 48000
- B. 50000
- C. 51000
- D. 45000
Show answer and explanation
Answer: A. 48000
Mango = 25% of 60% = 15% of all trees. Apple = 20% of 15% = 3% of all trees. Total = 1440 / 0.03 = 48,000.
- A dozen pairs of socks quoted at Rs.180 are available at a discount of 20%. How many pairs of socks can be bought for Rs.48 ?
- A. 2 pairs
- B. 4 pairs
- C. 3 pairs
- D. 5 pairs
Show answer and explanation
Answer: B. 4 pairs
Price of a dozen after 20% discount = Rs 144, i.e. Rs 12 a pair. Pairs for Rs 48 = 48/12 = 4.
- If 50% of (P – Q) = 30% of (P +Q) and Q = x% of P, then the value of x is :
- A. 20
- B. 50
- C. 30
- D. 25
Show answer and explanation
Answer: D. 25
0.5(P - Q) = 0.3(P + Q) gives 0.2P = 0.8Q, so Q = P/4 = 25% of P. So x = 25.
- The price of a school bag and a shoe are in the ratio 7 : 5. The price of the school bag is Rs. 200 more than the price of the shoe. Then the price of the shoe is :
- A. ₹500
- B. ₹200
- C. ₹1200
- D. ₹700
Show answer and explanation
Answer: A. ₹500
The difference of 2 parts = Rs 200, so 1 part = Rs 100. Shoe = 5 parts = Rs 500.