by Sana
(Islamabad,Pakistan.)
The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is
the age of the youngest child?
Let x be the age of the youngest child.
Let x + 3 be the age of the second child.
Let x + 6 be the age of the third child.
Let x + 9 be the age of the fourth child.
Let x + 12 be the age of the fifth child.
The sum of their ages is equal to 50 as shown below
x + x + 3 + x + 6 + x + 9 + x + 12 = 50
x + x + x + x + x + 3 + 6 + 9 + 12 = 50
5x + 30 = 50
Subtract 30 from both sides
5x + 30 - 30 = 50 - 30
5x = 20
Divide both sides by 5
5x/5 = 20/5
x = 4
The age of the youngest child is 4.
Aug 09, 16 01:40 PM
Average age of Dipu and Apu is 22 years. Average age of Dipu and Tipu is 24 years. Age of Dipu is 21 years. What are the ages of Apu, and tipu ? Let
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