En mi clase somos 30, el 40% chicos y el 60% chicas. ¿Cuántos chicos y cuántas chicas hay en mi clase?

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?

Find the amount of simple interest earned for depositing the given principle in an account if $2200 is invested at 5.5 % for 6 months