Sarah used 2.5 cups of cheese in a dish that serves 10 people. Arun used 1.6 cups of cheese in a dish that serves 12 people. How much more cheese is in one serving of sarahs dish?

0.12 cups

Step-by-step explanation:

What we need to get here is the proportion of cheese in each dish. This implies the ratio of cheese per dish.

Sarah used 2.5 cups for 10 people, which means 2.5/10 cups of cheese per dish. 2.5/10 = 0.25

So, Sarah gave 0.25 cups of cheese to each dish.

If we make the same calculation for Aron, we have 1.6/12=0.13

Arun used 0.13 cups of cheese per dish.

For getting the difference we just need to subtract:

0.25-0.13=0.12

So, Sarah used approximately 0.12 cups of cheese per dish more then Arun.