SAT Math Practice Exam

Answer C- It has two stages. Assume the number is Z.
4/5 x Z = 12, or Z = 12 x 5/4 = 15.
Then find 5/6 of 15 =15 x 5/6 = 5 x 5 /2 = 12.5

Key takeaway: First you convert the word problem into a simple equation with a variable. Then solve simple equation getting the variable alone on one side of the equal sign.