Answer:
5.11%
Explanation:
The formula for percent increase is given as:
% increase = Increase ÷ Original Cost × 100.
Increase = Current cost - Original cost
= $52.50 - $49.95
= $2.55
Hence,
% increase = $2.55/$49.95 × 100
5.1051051051%
Approximately , Percent Increase = 5.11%
Therefore, the percent increase of the cost of the train set is 5.11%