Let e=erasers and p=pencils. So we know the total amount of erasers plus pencils sold is equal to 220. Therefore,

We also know the cost of erasers and pencils totaled to $695 in earnings and so:

and so those are your two equations.
This is the answer and the steps
Answer:
942.48
Step-by-step explanation:
V=πr^2h=π·5^2·12≈942.4778
2.5 gallons is divided among 10 people.
2.5/10=0.25 gallons
Answer:
Efficiency is the ratio of output work to input work.