Jill sold half of her comic books and then bought 16 more. She now has 36. With how many did she begin?

2 Answers
May 23, 2018

The answer is 40

Explanation:

Start with 40 comic books. Divide in half is 20. Add 16 and you get 36. Try working backwards on these. Like 36-16 is 20...

May 23, 2018

40 comic books.

Explanation:

Let's say she started with x comic books:

she sold 1/212 of them:

x/2x2

then she bought 16 more:

x/2 + 16x2+16

now she has 36 comics:

x/2 + 16 = 36x2+16=36 solve...

x/2 = 20x2=20

x=40x=40