7
Answer: DSet 5: Ratios Rates Proportions (Beginner)
Explanation
PROBLEM
If x:y = 5:3 and x = 20, find y.
If x:y = 5:3 and x = 20, find y.
A.
13
B.
14
C.
9
D.✓ Correct
12
Detailed Explanation
Choice D is the best answer. x/y = 5/3. 20/y = 5/3. y = 20 times 3/5 = 12
Why others are wrong:
A: 13 is incorrect because it does not satisfy the equation.
B: 14 is incorrect because it does not satisfy the equation.
C: 9 is incorrect because it does not satisfy the equation.