If you help me and explain how you got your answer you will get brainlisyt

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?

An arithmetic series a consists of consecutive integers that are multiples of 4 what is the sum of the first 9 terms of this sequence if the first term is 0

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