Match each fraction with its percent equivalent. 1. 2/5 1. 50%
2. 3/10 2. 56%
3. 14/25 3. 30%
4. 1/2 4. 40%

pls helppp

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