Mathematics 0580 · IGCSE · Exponential growth and decay

Exponential growth and decay — practice question

(a(i))[2]

Show that Malena has 200 apple trees in all.

(a(ii))[1]

Find how many plum trees there are.

(a(iii))[2]

Calculate how many extra pear trees she needs.

(a(iv))[3]

Calculate how many apples the 200 trees produce in total. Give your answer correct to the nearest 1000 apples.

(b(i))[1]

Write this number as figures.

(b(ii))[1]

Write the answer to part (b)(i) in standard form.

(c)[2]

Calculate the mass of plums produced by one plum tree in 2019.

(d)[2]

Calculate the value of her investment after 15 years.

Worked solution & mark scheme

This 14-mark question has a full step-by-step worked solution and mark scheme. One marking point: $\frac{450}{8+7+3}\times 8$

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