The ratio of ages of a father and his son was 5:1. What is the age of the son after five years, if the ratio of their ages is 3:1 by this time ?

Question

নিচের অপশন গুলা দেখুন

• 12
• 10
• 16
• 7

Answer 1

সঠিক উত্তর হচ্ছে: 10

ব্যাখ্যা: Father = 5x
Son = x
So, ( 5x + 5) : ( x + 5) = 3 : 1
5x + 5)/ x + 5 = 3/1
5x + 5 = 3x + 15
2x = 10
x = 5
After 5 years son age = 5 + 5 = 10