The notebook

After rising by 40%, the notebook cost 10.50 euros. How much did this notebook cost if it increased in price by only 20% instead of 40%?

Correct answer:

x =  9 Eur

Step-by-step explanation:

k1=40%=1+10040=1.4 k2=20%=1+10020=1.2  k1 c=10.50 1.4 c=10.50  1.4c=10.5  c=215=7.5  x=k2 c=1.2 7.5=9 Eur



Did you find an error or inaccuracy? Feel free to write us. Thank you!



avatar







Tips to related online calculators
Our percentage calculator will help you quickly calculate various typical tasks with percentages.

Related math problems and questions: