Henry Ernest Dudeney/Puzzles and Curious Problems/35 - The Reapers' Puzzle

by : $35$

 * The Reapers' Puzzle
 * Three men were to receive $90 \shillings$ for harvesting a field, conditionally upon the work being dine in $5$ days.
 * Jake could do it alone in $9$ days, but as Ben was not as good a workman the were compelled to engage Bill for $2$ days,
 * in consequence of which Ben got $3 \shillings 9 \oldpence$ less than he would otherwise have received.


 * How long would it have taken Ben and Bill together to complete the work?