1. “The change from your pound, mum,” said Joan, putting 15p on the table. “I only got this one pair of socks, and a hankie for Peter.” Mary smiled. “That’s good,” she replied. “The prices haven’t changed since last month. I paid just four times as much for two pairs of socks and seven hankies for your dad, all like you bought.” What were the prices?

Socks 51p, handkerchiefs 34p

Socks 39p, handkerchiefs 21p

Socks 66p, handkerchiefs 29p