2 years ago

If the simple interest on $4000 for 2 years is $400, then what is the interest rate?

Mathematics

1 answer:

ivanzaharov [21]2 years ago

6 0

Step-by-step explanation:

the answer is 5 percentage because the formula is 100 * 400 over 4000 * 2

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3 years ago

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3 years ago

Suppose Ken has 25 coins and nickels and dimes only and has a total of a $1.65 how many of each coin does he have?

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$x-\ number\ of\ nickels\\
y-\ number\ of\ dimes\\\\
x+y=25 \ \ \ | x=25-y\\
0.05x+0.1y=1.65\\\\
0.05(25-y)+0.1y=1.65\\\\
1.25-0.05y+0.1y=1.65\\\\
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0.05y=0.4\ \ \ \ \ | divide\ by\ 0.05\\\\
y=8\\\\
x=25-8=17\\\\
There\ are\ 17 \ nickels\ and\ 8\ dimes.
$

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3 years ago

If the simple interest on ​$4000 for 2 years is ​$400​, then what is the interest​ rate?

If the simple interest on $4000 for 2 years is $400, then what is the interest rate?