Question

janet told Sam that she has read 10 books this year and reads 2 books each month. Sam wants to catch up to Janet. He tracks his book reading with a table on his door. Using his table below, what month will Sam have read the same amount of books as Janet?

Answer 1

The way I do this in my head is simple. I subtract 2 from each month Sam reads 3 books because Janet read 2 (therefore, he gets 1 more closer to her each month). If she is 10 ahead, it takes him 10 months to catch up because he gains 1 book read more than her per month

Answer 2

therefore the answer is February

Answer 3

you can use a formula but im terrible at producing those off my head