He reads 1/11 book in 2/5 hour.
A whole book is 11/11 of a book.
Multiply by 11.
He reads 11/11 book in 11 * 2/5 hour.
He reads 1 book in 22/5 hour.
22/5 hour = 4.4 hour = 4 hours and 24 minutes
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</span></span></span>the answer is .85
9 is to 36 as 10 is to 40 -is how you should write the proportion 9:36 = 10:40 using words.
Do 1200 minus 140 and then divide the answer by 20