Question

Laine reads 25 pages in 30 minutes. If Laine reads 200pages at this same rate, how long will it take her?

Answer 1

25 pages= 30 mints

200 pages = x mints

cross multiply and find the value of x

x= (200 x30)/25

= 240 minutes

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Answer 2

Laine will take 240 minutes to read 200 pages.

Given - Number of pages read in 30 minutes

Find - Time taken to read 200 pages

Solution - The question can be solved using unitary method.

30 minutes are taken to read number of pages = 25

Number of pages read in 1 minute = $\frac{25 \times 1}{30}$

Number of pages read in 1 minutes = 5/6

Time taken for 5/6 pages= 1 minute

Time taken for 200 pages = $\frac{1 \times 200}{ \frac{5}{6} }$

Time taken = $\frac{200 \times 6}{5}$

Time taken = 40*6

Time taken = 240 minutes

Hence, Laine will read 200 pages in 240 minutes.

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