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RRB NTPC Percentage — practice questions — page 2

Explore 79 free Percentage questions in RRB NTPC Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Percentage questions and exercises with answers

Showing questions 31–60 of 79.

A value becomes 360 after a 10% reduction. What was it before?Read the answer and worked solution →A price rises 20%, then falls 10%. Overall change?Read the answer and worked solution →A value rises 25% and then falls 20%. What is the net effect?Read the answer and worked solution →A town grows from 40,000 to 46,000. What is the growth rate?Read the answer and worked solution →At 5% simple interest, how long for ₹8,000 to earn ₹1,200?Read the answer and worked solution →A machine worth ₹20,000 depreciates 10% yearly. Value after 2 years?Read the answer and worked solution →A is 20% more than B. By what percent is B less than A?Read the answer and worked solution →An amount of ₹500 increases by 100%. What is the new amount?Read the answer and worked solution →A 60% reduction leaves what fraction of the original?Read the answer and worked solution →A quantity falls 40% from 250. What is left?Read the answer and worked solution →A 70% share of a 30% group is what percent overall?Read the answer and worked solution →A quantity falls 100%. What is its final value?Read the answer and worked solution →An amount is ₹840 after a 5% rise. What was it before?Read the answer and worked solution →A population is 30% of a region; 40% of it is urban. Urban share?Read the answer and worked solution →A ₹1,500 item gets 15% off. What does the buyer pay?Read the answer and worked solution →A machine costs ₹980 plus ₹75 delivery. What is its cost price?Read the answer and worked solution →A ₹880 marked item is discounted by 25%. Find its sale price.Read the answer and worked solution →A price including 5% tax is ₹2,520. What was the price before tax?Read the answer and worked solution →A ₹1,680 price includes 12% GST. Find the price before tax.Read the answer and worked solution →A shop takes ₹450 off a ₹2,500 marked price. Find the discount rate.Read the answer and worked solution →After a 15% discount, a marked price of ₹5,000 becomes what?Read the answer and worked solution →Which amount stays unchanged each year under simple interest?Read the answer and worked solution →An ₹8,000 asset loses 20% of its value in a year. New value?Read the answer and worked solution →A bacterial count of 5,000 grows 4% each hour. Count after one hour?Read the answer and worked solution →A town of 10,000 grows 3% annually for two years. Approximate whole population?Read the answer and worked solution →At 10% compounded annually, what is ₹6,000 after two years?Read the answer and worked solution →At 10% per year, ₹4,000 is compounded every half-year for one year. Amount?Read the answer and worked solution →What is the difference between simple and compound interest on ₹8,000 at 5% for two years?Read the answer and worked solution →A town reaches 11,025 people after two years of 5% annual growth. Starting population?Read the answer and worked solution →An item costs ₹900 and has ₹60 overhead. It sells for ₹1,152. Profit percent on cost?Read the answer and worked solution →

Worked practice questions

A value becomes 360 after a 10% reduction. What was it before?

  1. 390
  2. 396
  3. 400
  4. 410
Show answer and solution

Correct answer: C. 400

The remaining 360 is 90% of the original 400.

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A price rises 20%, then falls 10%. Overall change?

  1. 8% rise
  2. 10% rise
  3. 8% fall
  4. No change
Show answer and solution

Correct answer: A. 8% rise

The multipliers 1.2 and 0.9 yield 1.08, an 8% net rise.

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A value rises 25% and then falls 20%. What is the net effect?

  1. 5% rise
  2. 5% fall
  3. No change
  4. 10% rise
Show answer and solution

Correct answer: C. No change

Multiplying 1.25 by 0.80 gives 1, so the original value is restored.

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