math 156
posted by Rmz .
Liz needs to buy soft drinks for 30 people. At the store she finds that she can buy 6 cans for $2.10. She assumes that each person would drink 2 cans each. WHen she checks her wallet she finds that she only has $20. Does she have enough money to buy soft drinks?
No, because she would need to buy 60 cans making it 60*2.10=126/6=$21.
is that right?

Yes. That's correct. :)