Answer:
40%, 40%
Step-by-step explanation:
The % of shoppers that have an email account is
100 × Sum of shoppers under "email account" row/ Total number of shoppers
= 100 • (45+15)/150
= 40%
Same thing happens with the second question.
100 × Sum of shoppers in "Computer at home" column/ Total number of shoppers
= 100•(45+15)/150
= 40%
