In the exercise "Clash of Clans and Math", we find out that the unit rate for gems is 100 gems per dollar when you buy 500 gems at a time.
In the exercise "Clash of Clans and Math (2)", when you buy 1200 a gems at a time, the unit rate for gems is 120 gems per dollar.
Let's say you want to buy 6000 gems using as little money as possible. Should you buy them 500 at a time, or 1200 at a time?
500 at a time
1200 at a time
Why do you think unit rate is lower when you buy in larger amounts? Instinctively, you already know that in video games. Explain it in your own words.
Aligned with Common Core:
6.RP.2 - Understand ratios and unit rates