Answer:
since the unknown amount can buy 100 pencils
he bought 70 pencils
therefore $4.50 can buy 30 pencils
so 1 pencils cost $4.50 /30=0.15
On which one? You did not provide anything for me to help you with.
Answer:

Step-by-step explanation:
Answer c: c
Step-by-step explanation:
c
Answer:
The better bar to buy is the Nutty Crunch
Step-by-step explanation:
4.74 / 6 = 0.79 per bar
7.80 / 10 = 0.78 per bar
:)