Mathematics for IGCSE & O level - Percentages (Section 4 - No. 29)
If an item increases in price by 50%, what factor is the new price multiplied by in comparison to the original?
0.5
1.0
1.5
2.0
Giải thích
An increase of 50% means the new value is the original plus half the original or 1.5 times original price.