Discussion :: Problems on Ages
- The age of John 10 years ago was thrice the age of his son. After ten years, John's age will be twice that of his son. What is the ratio of their present ages?
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Answer : Option A
Explanation :
Let the age of son 10 years ago = x years
Then age of John = 3x
According to question
After 10 years
2(x+20) = 3x+20
2x + 40 = 3x + 20
X= 20
The present of son and John are x+10 and 3x+ 10 respectively
Son's age = 20+10 = 30 years
John's age = 3 ×20 + 10 = 60+10 = 70 years
Ratio of their present age is =70:30 =7:3
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