Answer:
123.6%
Explanation:
We are given,
the amount at which Craig sells string beans per pound = $1.99
the cost to grow beans per pound = $0.89
and we know the formula to find the markup percentage:
Markup Percentage = (selling price - cost) / cost * 100
=

=

= 123.59
Therefore, the markup rate based on the cost, rounded to nearest tenth of a percent is 123.6%.