Mathematics for IGCSE & O level - Percentages (Section 3 - No. 46)
What represents a 10% increase?
Multiplying by 0.10
Multiplying by 1.10
Subtracting 10% from the original value
Dividing the original value by 1.10
Explication
A 10% increase is adding 10% of the original amount, multiplying by 1.10 is the same.