To find out the best buy
Calculate the unit price for each option
so
Option A ----> 4/26=$0.15 per treat
Option B ----> 8/48=$0.17 per treat
Option C ----> 9/57=$0.16 per treat
Option D ----> 16/100=$0.16 per treat
therefore
The best buy is option A
Step-by-step explanation
without calculator
we have the fractions
4/26=2/13
8/48=4/24=2/12=1/6
9/57=3/19
16/100=8/50=4/25
Find out equivalent fractions all with the same denominator
13*6*19*25=37,050
Multiply the fraction (2/13) by 2,850/2,850 ----> (2/13)(2,850/2,850)=5,700/37,050
Multiply the fraction (1/6) by 6,175/6,175 -----> 6,175/37,050
Multiply the fraction 3/19 by 1,950/1,950 ----> 5,850/37,050
Multiply the fraction 4/25 by 1,482/1,482 ----> 5,928/37,050
Now you compare teh fractios
All the fractions have the same denominator