SAT Math Question of the Day

Math Category: Fractions Level 2:

Q: If 1/3 = 4/5z, then what is z?

  1. 3/10
  2. 5/12
  3. 4/15
  4. 10/3
  5. 12/5

UNANSWERED.

The correct answer is E.

A: The answer is 12/5.

Cross-multiply to find the answer.
1/3 = 4/5z
1 × 5z = 3 × 4
5z = 12
z = 12/5