December) 2784

The official had a monthly salary of CZK 8,500. During the year, they increased his salary by 15%, so he received a total of 112,200 CZK for a year. From which month did they raise his salary? (1 = January .... 12 = December)

Correct answer:

n =  5

Step-by-step explanation:


8500·(n-1)+8500·(1+15/100)·(12-(n-1))=112200

127500n = 637500


n = 637500/127500 = 5

n = 5

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