Mark started the day with 14 buttons. His friend Shane gave him 3 times that amount of buttons. Then his other friend Sam asked if he could have half of Mark’s buttons. How many buttons did Mark end up with?
Step-by-step reasoning:
28
Shane gave Mark 14 * 3 = 42 buttons.

After that Mark had 42 + 14 = 56 buttons.

Then Mark gave 56 / 2 = 28 buttons to Shane.

Which left Mark with 28 buttons.

.

The final answer: 28