3. The price of my favourite soft drink has gone up in leaps and bounds over the past ten years. In four of those years it has leapt up by 5 p each year, whilst in the other six years it has bounded up by 2 p each year. The drink cost 70 p in 2002 . How much does it cost now?
A $£ 0.77$
B $£ 0.90$
C $£ 0.92$
$\mathrm{D} £ 1.02$
$\mathrm{E} £ 1.05$
Solution: $\mathbf{D}$
The cost has risen by 5 p four times, and by $2 \mathrm{p}$ six times. So the total price rise in pence has been $(4 \times 5+6 \times 2)=32$. Therefore the price now is $(70+32) \mathrm{p}=102 \mathrm{p}=£ 1.02$.