I ned help i will give brainliest to first answer

This is different from the first one can someone me

Guys i really need or i have to stay late up night

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