The price of a scooter increases successively by 10%, 5% and 15%. What is the total percentage increase in price of scooter?
Answer & explanation
Correct answer: option 1
10% = \(\frac{1}{10}\)
5% = \(\frac{1}{20}\)
15% = \(\frac{3}{20}\)
Let the price of the scooter = x
then ,
= x × \(\frac{11}{10}\) × \(\frac{21}{20}\) × \(\frac{23}{20}\) = \(\frac{5313}{4000}\)
Percentage increase = \(\frac{1313 × 100}{4000}\) = $32\frac{33}{40}\%$