Can someone plz help me with this one

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Each day jake donates money to the global.

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