Mathematics for IGCSE & O level - Percentages (Section 1 - No. 2)
Which of the following represents an increase of 25%?
Multiplying by 0.25
Adding 25% of the original amount
Multiplying by 1.25
Subtracting 25% of the original amount
Explication
Increasing by 25% means adding 25% to the original amount or multiplying by 1.25