7x3=21 A. Seven is three times the size of 21
B. Seven is 21 times the size of three
C. Anyone is seven times the size of seven
21 is seven times the size of three

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