Answer:
56.3%
Explanation:
The ratio of the selling price to the cost is ...
21.88/14 = 1.562857...
That is, 0.562857... of the original cost has been added to that cost. This markup amounts to about ...
0.562857 × 100% ≈ 56.3%
of the cost.
The markup percentage is about 56.3%.