1. The security guard had been standing in the shop watching the customers as they came in. "They all get those toffees at 6 pence an ounce," he commented. "You must have sold ten pounds of them while I've been here." "Less than that," replied Sam. "But it's funny the way they've gone. Pound for pound, and penny for ounce, I've taken exactly the same as the total weight sold." How much was that?

5 pounds and 4 pence for 5lb 4 ozs of toffees

8 pounds and 6 pence for 8lb 6 ozs of toffees

Seven pounds and eight pence for 7lb 8 ozs of toffees