Question

Erik had Y cards. He gave 13 of them to Andrew. Then Erik’s mom bought him twice as many cards as he had at the start. How many cards did Erik have in the beginning if he has the total of 47 cards now?

Answer 1

20

Explanation:

`(Y-13)+2Y=47`

`Y-13+2Y=47`

`3Y-13=47`

`3Y=60`

`Y=20`