a bicycle tire is 20 in in diameter. Approximately how far does the bicycle move forward each time the wheel goes around use 22/7 as an approximation for pi

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