You have done most of it, you just have to multiply 70 by $12.50 which equals $875
In this item, we let x be the amount that is deposited in the account that has a simple interest equal to 7%. With this representation, the amount that is deposited in the account with simple interest of 6% is equal to 12000 - x.
The amount of interest earned from the investment is calculated through the equation,
I = P x (i)
For the first investment,
I = (x)(0.07)
For the second investment,
I = (12000 - x)(0.06)
Adding up the interests,
800 = 0.07x + (0.06)(12000 - x)
The value of x from the equation is 8000.
<em>Therefore, the amount invested to that with 7% interest is $8000 and the amount invested to that with 6% interest is $4,000.</em>
I think the answer is C not to sure
For this case, the first thing you should keep in mind is that:
1 week = 7 days
Assuming Nancy eats Granola from Monday to Friday, then we have Nancy eat granola 5 days a week.
Therefore, it is in Nancy's interest to buy granola in packs of 5.
So, Nancy can eat granola almost every day.
Answer:
the most cost-effective option is:
C: buying a pack of five