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Suppose it takes Carly 3 hours to read 81 pages in her novel. The equation 81 3 = 243 x can be used to determine the number of hours, x, it will take her to read 243 pages. How many hours will it take Carly to read 243 pages? A) 6 hours B) 8 hours C) 9 hours D) 12 hours

Respuesta :

frika

Answer:

C 9 hours

Step-by-step explanation:

It takes Carly 3 hours to read 81 pages in her novel.

It takes Carly x hours to read 243 pages in her novel.

Write a proportion:

[tex]\dfrac{81}{3}=\dfrac{243}{x}[/tex]

Solve it for x. Cross multiply:

[tex]81\cdot x=243\cdot 3\\ \\81x=729\\ \\x=\dfrac{729}{81}\\ \\x=9[/tex]

It will take Carly 9 hours to read 243 pages.

Answer:

C

Step-by-step explanation:

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