A quantity rises by 20% and then by 25%. What is the overall percentage change?
An overall increase of 50%✓Richtige Antwort
An overall increase of 45%
An overall increase of 5%
An overall increase of 150%
Erklärung
The combined multiplier is 1.20 × 1.25 = 1.50, so the quantity has increased by 50%. Adding the rates gives 45%, which misses the extra 25% applied to the first rise.