4. Three sisters bought a packet of biscuits for $£ 1.50$ and divided them equally among them, each receiving 10 biscuits. However, Anya paid 80 pence, Berini paid 50 pence and Carla paid 20 pence. If the biscuits had been divided in the same ratios as the amounts each sister had paid, how many more biscuits would Anya have received than she did originally?
A 10
B 9
C 8
D 7
E 6
4. $\mathbf{E}$ Anya pays 80 p out of a total of $80 p+50 p+20 p=150$ p. So if the biscuits had been divided in the same ratio as the payments, she would have received $\frac{80}{150} \times 30=16$ biscuits. So she would have received $16-10=6$ more biscuits.