Answer :
so if the was 2.25 and it has increased 115% that means that it has doubled but also has increased by 15% so the new price should be
2.25+2.25+ (15% of 2.25)
= 4.50 + 0.3375
= 4.83375
2.25+2.25+ (15% of 2.25)
= 4.50 + 0.3375
= 4.83375