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WAEC (WASSCE) Mathematics · Number and Numeration

Percentages: WAEC Mathematics Past Questions and Answers

What the WAEC syllabus covers in Percentages

Our summary: Using percentages for interest, discounts, profit and loss and similar money problems.

  • Simple interest, commission, discount, depreciation, profit and loss, compound interest, hire purchase, and percentage error

Syllabus content © The West African Examinations Council (WASSCE (harmonised West African syllabus)).

WAEC (WASSCE) Mathematics questions on Percentages

  1. WAEC 2024The population of a town increases by 3% every year. In the year 2000, the population was 3000. Find the population in the year 2003.
  2. WAEC 2024A trader gave a change of 540.00 instead of 570.00 to a customer. Caculate the percentage error.
  3. WAEC 2024Find the sum for which 1,250.00 will amount to 2,031.25 at 12.5% per annum simple interest.
  4. WAEC 2023A student measured the height of a pole as 5.98 m which is less than the actual height. If the percentage error is 5%, find correct to two d.p the actual height…
  5. WAEC 2023A notebook of length 15 cm was measured to be 16.8 cm, calculate, correct to two d.p, the percentage error in the measurement.
  6. WAEC 2022A trader made a loss of 15% when an article was sold. Find the ratio of the selling price : cost price
  7. WAEC 2022The length of a piece of stick is 1.75 m. A boy measured it as 1.80 m. Find the percentage error
  8. WAEC 2022A weaver bought a bundle of grass for 50.00 from which he made 8 mats. If each mat was sold for 15.00, find the percentage profit.
  9. WAEC 2021A trader paid import duty of 38 kobo in the naira on the cost of an engine. If a total of 22,800.00 was paid as import duty, calculate the cost of the engine.
  10. WAEC 2020An amount of N550,000.00 was realized when a principal, x was saved at 2% simple interest for 5 years. Find the value of x
  11. WAEC 2019Bala sold an article for 6,900.00 and made a profit of 15%. Calculate his percentage profit if he had sold it for N6,600.00.
  12. WAEC 2017If the simple interest on a certain amount of money saved in a bank for 5 years at 2 1/2 % annum is N500.00, calculate the total amount due after 6 years at the…
  13. WAEC 2016What sum of money will amount to D10,400 in 5 years at 6% simple interest?
  14. WAEC 2013A sales boy gave a change of N68 instead of N72. Calculate his percentage error
  15. WAEC 2012If N2,500.00 amounted to N3,50.00 in 4 years at simple interest, find the rate at which the interest was charged
  16. WAEC 2011The length of a piece of stick is 1.75m. A girl measured it as 1.80m. Find the percentage error
  17. WAEC 2010Bola sold an article for N6,900.00 and made a profit of 15%. If he sold it for N6,600.00 he would make a
  18. WAEC 2010A casting is made up of Copper and Zinc. If 65% of the casting is Zinc and there are 147g of Copper. What is the mass of the casting?

Years with Percentages questions in DeeepSolve's question bank

From the past questions DeeepSolve holds, not a count of everything the exam body has set.

  • 2024
  • 2023
  • 2022
  • 2021
  • 2020
  • 2019
  • 2017
  • 2016
  • 2013
  • 2012
  • 2011
  • 2010
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