Question

Emanuel read 150 pages in 5 hours. how many pages would he read in 4 1/2 hours?

Answer 1

$From\ proportion:\\\\5\ \ \ -\ \ \ 150\\4\frac{1}{2}\ \ -\ \ \ x\\\\5x=\frac{9}{2}\cdot150\\5x=675\ \ \ \ |:5\\x=135\\\\Emanuel\ would\ read\ 135\ pages.$

Answer 2

there is 10 half an hours in 5 hours

in 4 1/2 there are 9 

so 150/10=15

15x9=135