Ninety percent of the schools students, or 540 students, attended a school assembly. how many students are there at the school? show work

Afactory adds 3 red drops and 2 blue drops of coloring to white paint to make each pint of purple paint. the factory will make 50 gallons of the purple paint. how many drops of red and blue coloring will the factory need in the 50 gallon batch of purple paint.

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).