The sum of the ages of 4 children is 52 years. The age of the youngest child is 4. If the intervals of years each born is same find the interval?
Choose the correct option:
A) 4
B) 8
C) 10
D) 6
E) Cannot be determined
Explanation:   Let the interval is x .The youngest child's age is 4. Each of the other 3 children will then be 4+x, 4+2x, 4+3x   We know that the sum of their ages is 52 .   so, 4+(4+x)+(4+2x)+(4+3x) = 52   x= 6   Answer: 6
<result>D</result>
The sum of the ages of 4 children is 52 years. The age of the youngest child is 4. If the intervals of years each born is same find the interval?