Mathematics: 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

Suppose it takes carly 3 hours to read 81 pages

paxbro3986

10.01.2022

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:

$\dfrac{81}{3}=\dfrac{243}{x}$

Solve it for x. Cross multiply:

$81\cdot x=243\cdot 3\\ \\81x=729\\ \\x=\dfrac{729}{81}\\ \\x=9$

It will take Carly 9 hours to read 243 pages.

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genaro19

19.01.2023

answer is 5

Step-by-step explanation:

10/2=5

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