On friday 12,500 cars traveled over a certain bridge. on saturday 13,125 cars traveled over the same bridge. what was the percent of increase in the number of cars that traveled over the bridge? a. 5% b. 6.25% c. 10% d. 12.5%

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