A store owner mixes 2 lb of candy that costs x dollars per pound with 3 lb of candy that costs $1.50 per pound. She sells the mix for $2.50 per pound. How much did the 2 lb of the first type of candy cost the owner?

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

Bill works as a waiter and is keeping track of the tips he ears daily. about how much does bill have to earn in tips on sunday if he wants to average $22 a day? tips by day tips (dollars) monday tuesday wednesday thursday friday saturday $14 $22 $28 $36

Which one ? is the answer and how to find this answer