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yanalaym [24]
3 years ago
6

If Amelia would like to double her money in twelve years, how much interest does she need to earn? 6 percent 12 percent 10 perce

nt 16.6 percent
Mathematics
1 answer:
sveticcg [70]3 years ago
4 0
We can assign the value "2x" as the amount of money that Amelia which to achieve in twelve years.
So, his initial money is X.
We can try each percent to test if it could double the amount in 12 years.
x+0.06*12years*x=1.72X
x+0.12*12*x=1.44x
x+0.1*12*x=2.2x
x+0.166*12*x=2.992x

Therefore, the answer is 10 percent.
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Step-by-step explanation:

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8 0
3 years ago
Bill and Mary Ann went to the Viola bakery. Bill bought 5 pies and 7 donuts for ​$12.65. Mary Ann bought 6 of each for ​$12.30.
sweet [91]

Answer:

Pies=$0.85

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Step-by-step explanation:

In the equation let p stand for the number of pies and d stand for the number of donuts.

To solve this set up 2 equations, one representing bill and the other representing Mary Ann.

  • Bill's equation is 5p+7d=$12.65.
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Then solve using a system of equations. Systems of equations can be solved using elimination or substitution. I will use substitution. Solve bill's equation for p. This gives you p=\frac{12.65-7d}{5}. Then, you can substitute that into Mary Ann's equation. This looks like 6\cdot \frac{12.65-7d}{5}+6d=12.3. Solve for d. Once you solve d=1.20. Finally, substitute 1.20 back into either Bill's or Mary Ann's for d and solve for p. No matter which equation you use p=0.85.

3 0
2 years ago
A bank loaned out 17000 part of it at the rate of 7% per year and the rest 15% per year. If the interest received in one year to
pogonyaev

x+y=17000 (x.7+y.15)/100=2000 (7x+7y)+8y=200000. 8y=200000-17000.7 y=61.5.5.5 17000-y=9375=x x=9375

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3 years ago
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2 years ago
The sum of two numbers is 39 . The larger number is 19 more than the smaller number. What are the numbers?
4vir4ik [10]

ANSWER: The numbers are 20 and 19

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8 0
3 years ago
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