You have three $1 bills, four $5 bills, and two $10 bills in your pocket. you select a bill at random. without replacing a bill, you choose a second bill at random. find p($5 then $10)

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of