Question

Jeff sold half of his baseball cards rhen bought 16 more.now he has 21 baseball cards. How many cards did he begin with?

Answer 1

he started with 10

Explanation:

so if he sold half, that means he still has half..

let c represent the total cards

1/2c + 16 = 21

1/2c = 21 - 16

1/2c = 5

c = 5 * 2

c = 10 <====