Respuesta :

Answer:

C) 120

Step-by-step explanation:

Use three times five and minus one times

you will get 12 and multiply by 10

C. 120

or a faster way to solve these is just 150 (total # of students) and multiply by the percent in decimal form which in this case would be 0.80 (because percentage is out of 100, 80% is 80/100, which is 0.80 as a decimal)

150 • 0.8 = 120!!! :)