It takes Sian 9 days to read a 432 page book. How long will it take her to read a 720 page book at the same rate?
i need help
+150 Let x number of how many time it take to read.
\(\frac{9}{432}=\frac{x}{720}\)
\(48x=720\)
\(x=15\)
+37146 9 days / 432 pages * 720 pages = 15 days
( see how the 'pages' cancel' out .....and you are left with 'days' as units?)
