Ron used 3/5 pound of flour to bake bread and 2/7 pound flour to bake scones. How many more pounds of flour did he use to bake bread than scones?

To determine the difference between the number of pounds of flour used than pounds of scones, we simply have to subtract 2/7 from 3/5.

n = 3/5 - 2/7

To answer, first, make the denominator 35 for each of the fraction since 35 is the least common multiple of 5 and 7. The expression now becomes,

n = 21/35 - 10/35

Simplifying,

n = 11/35

Answer: 11/35 lbs.