Question

The sum of ages of 6 persons born at the interval of 4 years each is 60 years. What is the age of the oldest
Child?​

Answer 1

Step-by-step explanation:

hope my answer is right ☺️

Answer 2

The age of oldest child is 20 years.

Given:

• The sum of ages of 6 persons born at the interval of 4 years each is 60 years.

To find:

• What is the age of the oldest Child?

Solution:

Concept to be used:

• Assume the age of youngest person.
• Take the ages of other person in interval of 4.

Step 1:

Let the age of youngest person is x years.

Age of next elder person is (x+4) years

Age of next elder person is (x+4+4) =(x+8) years

.

.

.

Age of eldest person is =(x+20) years

Step 2:

Sum of ages of all person is 60 years.

So,

$x + (x + 4 )+ (x + 8 )+ (x + 12 )+ (x + 16) +( x + 20 )= 60$

or

$6x + 60 = 60$

or

$6x = 0$

or

$\bf x = 0$

Thus,

The age of youngest person is zero years.

So,

Age of oldest person/child is 0+20= 20 years.

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