Max bought 2 3/4 pounds green apples, 1 5/8 pounds yellow apples, and 1 5/8 red apples. the total cost was $5.40. what is the cost for one pound of apples if all apples cost the same amount per pound

Aarti posted a comment on her blog. each day the number of responses to her comment was 125% of the number she received on the previous day. if there were 64 responses the first day, how many were there on the fourth day?