The total age of five children born at three-year intervals is 50 years. What is the youngest child's age?
A. 4 years
B. 8 years
C. 10 years
D. None of these
Answer:A
The total age of five children born at three-year intervals is 50 years. What is the youngest child's age?
A. 4 years B. 8 years C. 10 years D. None of these
Explanation: The children's ages should be x, (x + 3), (x + 6), (x + 9) and (x + 12).Then 50 = x + (x + 3) + (x + 6) + (x + 9) + (x + 12).20 x 5,x equals 4.The youngest child's age is x = 4 years.