Basillo read 135 pages of a book in 3 hours. Which rate is proportional to the rate at which Basillo read? (answer choices in desc)

Question

A) Cai read 85 pages in 2 hours

B) Dabir read 120 pages in 3 hours.

C) Emily read 200 pages in 5 hours.

D) Fabio read 270 pages in 6 hours.

Answer 1

Fabio read 270 pages in 6 hours.

 

Cross multiply each answers against 135/3 until you find a match.

 

135/3 vs/ 85/2 --> 135 x 2 vs.  3 x 85  --->  270 vs. 255 ---> NO

 

135/3 vs. 120/3 ---> cannot be correct because bottoms are the same but tops are not

 

135/3 vs. 200/5 --->  135 x 5 vs. 3 x 200 ---> 675 vs. 600 ---> NO

 

Fabio's reading speed is exactly the same, the ratio is doubled : 135/3 x 2/2 = 270/6