The lady bought 48 lbs. of beef at 2s., and the same quantity of
sausages at 1s. 6d., thus spending £8, 8s. Had she bought 42 lbs. of
beef and 56 lbs. of sausages she would have spent £4, 4s. on each, and
have obtained 98 lbs. instead of 96 lbs.--a gain in weight of 2 lbs.