Alex reads 1/3 of a chapter every hour. how long does it take him to read one chapter?

Question

 Alex reads 1/3 of a chapter every hour. how long does it take him to read one chapter? How long will it take him to read 1 1/2 chapters?

Answer 1

It takes him 3 hours to read one chapter.

 

The proportion  3 hours/1 chapter = T / 1 and 1/2 chapters.

 

Cross Multiplication shows that it will take him 4 and 1/2 hours to read 1 and 1/2 chapters.