A printing machine takes $15$ minute to print three pages of a book. If the book contains $56$ pages, then how much time(in minutes) is taken to print total book by this machine?

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Solution

Time taken to print $3$ pages $= 15 m i n$
Time taken to print $1$ page $= \frac{15}{3} = 5 m i n$
Time taken to print $56$ pages $= 5 \times 56 = 280 m i n$

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A printing machine takes 15 minute to print three pages of a book. If the book contains 56 pages, then how much time(in minutes) is taken to print total book by this machine?

Time taken to print 3 pages =15 minTime taken to print 1 page =153=5 minTime taken to print 56 pages =5×56=280 min

A printing machine takes $15$ minute to print three pages of a book. If the book contains $56$ pages, then how much time(in minutes) is taken to print total book by this machine?

Time taken to print $3$ pages $= 15 m i n$
Time taken to print $1$ page $= \frac{15}{3} = 5 m i n$
Time taken to print $56$ pages $= 5 \times 56 = 280 m i n$