Seamstress' 4608

The seamstress' earnings in the last three months of the year are always 20 percent higher than the previous month. She earned a total of CZK 65,520 between October and December. How much CZK did you make in October?

Correct answer:

x =  18000 Kc

Step-by-step explanation:

q=1+20/100=56=1.2 a=65520 a = x (1+q+q2) x=a/(1+q+q2)=65520/(1+1.2+1.22)=18000 Kc

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