Question

mathematics 7 - 7 - full year
3 - 4: lesson quiz
the table shows the participation in a schools debate club during the last four years.

between which two years did the club see the greatest growth? by what percent did it grow?

Explanation:

Step1: Calculate growth rate for each year interval

For year 1 - 2:
Growth amount \(=19 - 14=5\). Growth rate \(=\frac{5}{14}\approx 0.357 = 35.7\%\)
For year 2 - 3:
Growth amount \(=25 - 19 = 6\). Growth rate \(=\frac{6}{19}\approx0.316=31.6\%\)
For year 3 - 4:
Growth amount \(=33 - 25=8\). Growth rate \(=\frac{8}{25}=0.32 = 32\%\)

Answer:

The greatest growth was between year 1 and year 2. The growth rate was approximately \(35.7\%\)