Worksheets · Foundation and Higher

Original values, profit and simple interest

3 exam-style questions. Answers and the mark for each step are on the last page.

1. Question 1Non-calculator · 3 marks

   (a) £600 is invested at 3% simple interest per year for 4 years. Work out the total interest earned. (3)
2. Question 2Calculator · 4 marks

   You may use a calculator.

   (a) In a sale, the price of a television is reduced by $15\%$. The sale price is £323. Work out the price before the sale. (2)

   (b) Ravi's rent went up by $4\%$. His new rent is £832 per month. What was his rent before the increase? (2)
3. Question 3Non-calculator · 1 mark

   (a) A price is increased by p%, where p > 0. It is then reduced by q% to return exactly to its original value. Which expression gives q in terms of p? Select one answer. (1)

   1. p
   2. 100p/(100 $-$ p)
   3. 100p/(100 + p)
   4. p/100