9. The ratio of boys to girls in a class is 4:5. How many students in the class if there are 24 boys?
A. 30
B. 52
C. 54
D. 56
Plsss need help I choose the Brainliest if it's good​

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

Solve for x and select the correct answer