All categories

3 years ago

25% of 400 is equal to 20% of What?

Mathematics

1 answer:

Bess [88]3 years ago

8 0

Here is your answer:

First find 25% of 400:

400/x=100/25
(400/x)*x=
(100/25)*x
x 400=4*
400/4=x
100=x
x=100

The answer is "500."

100 ÷ 20%
100 ÷ (20 ÷ 100) =
(100 × 100) ÷ 20 =
10,000 ÷ 20 =
= 500

Hope this helps!

You might be interested in

You start at (4, 4). You move up 1 unit and left 6 units. Where do you end?

Citrus2011 [14]

Answer: (10,5)

Step-by-step explanation:

add 6 do the x value

then add 1 to the y value

5 0

3 years ago

Read 2 more answers

Suppose an amount increases by 100% percent, then decreases by 100% percent. Find the final amount. Would the situation change i

Oksi-84 [34.3K]

No it will not change it will be 250% then it will decrease 100% down again back to 150%

6 0

3 years ago

Solve for a. a^2=-3a+88

Sergio [31]

Answer:

$a=8,-11$

Step-by-step explanation:

$a^2=-3a+88$

$a^2+3a=88$

$a^2+3a-88=0$

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

$x=\frac{-3\pm\sqrt{3^2-4(1)(-88)} }{2(1)}$

$x=\frac{-3\pm\sqrt{9+352} }{2}$

$x=\frac{-3\pm\sqrt{361} }{2}$

$x=\frac{-3\pm19 }{2}$

$x=-11$ and $x=8$

Therefore, the values of $a$ are 8 and -11.

5 0

2 years ago

What is the sum of the interior angles

galben [10]

Answer:

The sum of the interior angle is 108°

Step-by-step explanation:

To find the sum of the interior angle, you need this equation:

$\frac{180(n-2)}{n}$ (The variable $n$ represents the number of sides does a shape have).

-Count the sides of the shape:

The following polygon shown, has 5 sides.

-After you have the number of sides of the polygon, use the number of sides for the equation and it will be written as:

$\frac{180(5-2)}{5}$

-Then, you solve:

$\frac{180(5-2)}{5}$

$\frac{180(3)}{5}$

$\frac{540}{5} = 108\textdegree$

So, the sum of the interior angle is $108\textdegree$ .

7 0

3 years ago

What is 2/5% of 820? 1.8 2.05 2.88 3.28

Margarita [4]

Answer:

D) 3.28

Step-by-step explanation:

820/x=100/2.5

(820/x)*x=(100/2.5)*x - we multiply both sides of the equation by x

820=40*x - we divide both sides of the equation by (40) to get x

820/40=x

20.5=x

x=20.5

now we have:

2.5% of 820=20.5

6 0

2 years ago