If the ratio of people with glasses at our school to the total number of people is 3:8, how many people with glasses are there if there are 3,000 people at the school?

Masons cell phone company charges $0.12 for every text message he sends plus $2.50 per month if mason sent 25 messages this month how much money does he owe the one with the correct answer and explanation gets 10 points and is marked as the brainliest answer