For 8 weeks of work, mealine will receive $600 and a new computer. After only 6 weeks of work she will receive a new computer but only $150 dollars bonus. How much does the computer cost

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