Question 15 — IGCSE 0580 Oct/Nov 2025 Paper 43
Cambridge IGCSE Mathematics 0580, Extended tier, calculator. Topic: Numbers · The four rules. Worth 5 marks.
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Question text
15 The population of a town is 54 000.
The population is decreasing exponentially at a rate of 2% per year.
(a) Calculate the decrease in the population at the end of 4 years.
................................................. [3]
(b) Find the number of complete years it takes for the population of 54 000 to first fall below 44 000.
........................................ years [2]
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