Henry Ernest Dudeney/Puzzles and Curious Problems/137 - Buying Dog Biscuits/Solution

by : $137$

 * Buying Dog Biscuits

Solution

 * $2$ of the $16 \ \mathrm{lbs.}$ boxes and $4$ of the $17 \ \mathrm{lbs.}$ boxes make $100 \ \mathrm{lbs.}$