Sean read 1/5 of a book in 1 1/2 hours. How long will it take Sean to read 1/2 of this book?

Question

Answer as a mixed number in simplest form.

Answer 1

1/5 is in proportion to 3/2

equal

1/2 in in proportion to ????

Cross multiplies:

(1/5) * ? = (3/2)*(1/2)

(1/5)*? = 3/4

? = 3/4 * 5/1 = 15/4 = 3 and 3/4 hours