HELP ASAP I'M GIVING BRAINLIEST

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

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red