Multiply using the property of zero

On an airplane there are two seats on the left side and three seats on the right side there are 90 seats o the right side of the plane

Our goal is to collect email addresses from 60% of customers who purchase a product." so that means if i talk to 95 customers, i need to persuade to provide an email address?

The function show two sisters' savings account and the rate at which they plan to deposit money