According to given -
[tex] \frac{x}{90} = \frac{7}{9} [/tex]
Therefore,
By cross multiplication we get,
[tex]9x = 7 \times 90[/tex]
Now to find the value of x, we divide both sides by 9
[tex] \frac{9x}{9} = \frac{7 \times 90}{9} [/tex]
By cancelling the factors,
[tex]x = 7 \times 10[/tex]
[tex]x = 70[/tex]
Therefore,
The correct option is b) 70
What are factors?
We know that,
Factors are the numbers that can divide a number exactly. Hence, after division, there is no remainder left. Factors are the numbers you multiply together to get another number. Thus, a factor is the divisor of another number.
A prime number has only two factors, i.e., 1 and the number itself. But the composite numbers have more than two factors.
Some of the important properties of factors of a number are listed below:
How to find factors?
There are two possible methods to find factors of any number, such as:
Learn more about factors at : https://brainly.com/question/24182713?referrer=searchResults
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