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Ok so, Adam had 91 dollars. If he spent 21 dollars on new books, what is the ratio of money he still has, to money he's spent. The answer is 10:3, but I need a show your work example from somebody! Please help!

Respuesta :

calculista

Answer:

[tex]\frac{10}{3}[/tex]

Step-by-step explanation:

Let

x ----> the money Adam still has

y ---> the money Adam spent

r ---> the ratio of money he still has, to money he's spent.

[tex]r=\frac{x}{y}[/tex]

we know that

The money Adam still has is the same as the money he originally had minus the money he spent.

so

[tex]x=\$91-\$21=\$70[/tex]

we have

[tex]y=\$21[/tex]

Find the ratio

[tex]r=\frac{70}{21}[/tex]

Simplify

Divide by 7 both numerator and denominator

[tex]r=\frac{10}{3}[/tex]

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