the new interest rate on your credit card, after the increase by 19%, will be 8.33%
We know that at the moment the interest rate on your credit card is 7%, and we know that your company says that this rate will go up by 19%.
So we will have an increase of the 19% in our current rate, then the new percentage will be:
7*(1 + 19%/100%) = 7*(1.19) = 8.33
This means that the new interest rate on your credit card, after the increase by 19%, will be 8.33%
If you want to learn more about percentages:
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