Which is 15% of your credit score?
Length of credit history (15%)\n\n Your FICO Scores take into account: How long your credit accounts have been established, including the age of your oldest account, the age of your newest account and an average age of all your accounts.
What is 30 percent of $400 credit limit?
Answer: 30% of 400 is 120.
How do you calculate a 30 percent credit limit?
To keep your scores healthy, a rule of thumb is to use no more than 30% of your credit card's limit at all times. On a card with a $200 limit, for example, that would mean keeping your balance below $60.