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gayaneshka [121]
3 years ago
7

If 32% of a number is 64, what is the number?

Mathematics
2 answers:
Korvikt [17]3 years ago
8 0
We set up a proportion: 64/?= 32/100

Cross multiply: 32*?= 64*100
⇒ ?= 64*100/32= 200

The number is 200.
Helen [10]3 years ago
4 0
If you would like to solve 32% of a number is 64, you can calculate this using the following steps:

32% of a number is 64
32% * x = 64
32/100 * x = 64     /*100/32
x = 64 * 100 / 32
x = 200

Result: 32% of 200 is 64.
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three sets of the sum of a number and four are added to the sum of seven times the same number and thirteen
almond37 [142]

The algebraic expression for given statement is: 10x + 25 or 3(x + 4) + (7x + 13)

<em><u>Solution:</u></em>

Given the statement:

Three sets of a sum of a number and four are added to the sum of seven times the same number and thirteen

Let us first understand the given statement,

Let the number be "x"

" sum of a number and four" means x + 4

"Three sets of a sum of a number and four" translated to 3(x + 4)

"sum of seven times the same number and thirteen" means 7x + 13

<em><u>Thus the algebraic expression for given statement is:</u></em>

3(x+4)+(7x + 13)

<em><u>Using distributive property in above expression</u></em>

a(b+c) = ab + bc

Therefore,

3(x+4)+(7x + 13) = 3x + 12 + 7x + 13

<em><u>Combine the like terms</u></em>

3(x+4)+(7x + 13) = 10x+25

Thus the required expression for given statement is: 10x + 25 or 3(x + 4) + (7x + 13)

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Answer:

The answer would be C

Step-by-step explanation:

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