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IMSO 2009 Mathematics – Taiwan Selection – Exploration Question 2

IMSO Maths · IMSO 2009 Mathematics – Taiwan Selection – Exploration

Question 2

In 2008, a school had 450 new pupils, making a total of 1600 pupils. In 2009 there were 504 new pupils, and 8% of the previous year's pupils left the school.

(a) Find the percentage increase in the number of new pupils from 2008 to 2009. (2 points)

(b) How many pupils left the school? (3 points)

(c) What was the total number of pupils in the school in 2009? (3 points)