contestada

Translate the question to a proportion. Do not solve. Use the letter a if the unknown is the amount, the letter b if the unknown is the base and p if the unknown is a percent. a) 85% of 56 is what number?b) 30% of what number is 36?

Respuesta :

(a).

Let us call the unknown number a, then we know that

[tex]\frac{85}{100}\times56=a[/tex]

(b).

Let us call the unknown number b, then we know that

[tex]\frac{30}{100}\times b=36[/tex]

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