1. ## Basic math problem

I'm going on a trip with my friend. He put both airfares on his card (total: $260); I paid car rental on mine (total:$120) He claims I owe him $140 because 260-120=140. I think I owe him$70 because:

I owe him $130 for airfare (1/2 of 260); he owes me$60 for car rental (1/2 of $120). So, 130-60=70. Who's right??? 2. ## Re: Basic math problem Originally Posted by Geos I'm going on a trip with my friend. He put both airfares on his card (total: \$260); I paid car rental on mine (total: \$120) He claims I owe him \$140 because 260-120=140. I think I owe him \$70 because: I owe him \$130 for airfare (1/2 of 260); he owes me \$60 for car rental (1/2 of \$120). So, 130-60=70. Who's right???
Total expenses were 120+260 = 380.

Fair share is half, 190.

You paid 120, he paid 260 ... you owe him 70.

3. ## Re: Basic math problem

YES! Thanks for the reply. He finally saw the wisdom of my ways.

4. ## Re: Basic math problem

Equivalently, he paid 260-120= 140 (his calculation) more than you did. But you are splitting all costs 50-50 so you owe him 140/2= 70.