p.92 (3) A grocer bought flour at £ 16 3s 4d per ton. At what price per stone must he sell it so as to gain 15 per cent?
(1 st. = 14 lbs; 1 cwt. (a hundredweight) = 8 st; 1 ton = 20 cwt.)
3/4 (3s. 4d.) was popular in sums: It is exactly one-sixth of a pound.
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