9
Answer: CSet 2: Ratios Rates Proportions (Beginner)
Explanation
PROBLEM
If x:y = 2:5 and x = 12, find y.
If x:y = 2:5 and x = 12, find y.
A.
28
B.
33
C.✓ Correct
30
D.
32
Detailed Explanation
Choice C is the best answer. x/y = 2/5. 12/y = 2/5. y = 12 times 5/2 = 30
Why others are wrong:
A: 28 is incorrect because it does not satisfy the equation.
B: 33 is incorrect because it does not satisfy the equation.
D: 32 is incorrect because it does not satisfy the equation.