the sum of the ages of 5 children born at the intervals of 3 year each is 50 year. what is the age ...
the sum of the ages of 5 children born at the intervals of 3 year each is 50 year. what is the age of the youngest child ?
Answer/Solution
4 year
Steps/Work
Solution
let the ages of the children be x,(x + 3),(x + 6),(x + 9) and (x + 12) year.
then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50 ⇔ 5 x = 20 ⇔ x= 4.
∴ Age of the youngest child = x = 4 years. Answer A
let the ages of the children be x,(x + 3),(x + 6),(x + 9) and (x + 12) year.
then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50 ⇔ 5 x = 20 ⇔ x= 4.
∴ Age of the youngest child = x = 4 years. Answer A