Mark invests 8000 in an account that pays 12% interest and 2000 in one that pays 8%. if he leaves the money in the accounts for the same length of time, how long must he leave it to gain 5600 in interest

mark must leave it for 5.5 months or 5 and half moths to gain 5600 in interest .

Step-by-step explanation:

Here we have , mark invests 8000 in an account that pays 12% interest and 2000 in one that pays 8%. if he leaves the money in the accounts for the same length of time, We need to find how long must he leave it to gain 5600 in interest . Let's find out:

Let mark invests 8000 in an account that pays 12% interest and 2000 in one that pays 8% for time x months , So total interest gain is 5600 i.e.

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Therefore , mark must leave it for 5.5 months or 5 and half moths to gain 5600 in interest .

i would say c is the best answer, hope it's right!

good luck! =)

cutie~

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation: