The age of Richard is 22 years while Teo's age is 9 years.
Let Teo's age be represented by x.
Since Richard is 4 years older than twice Teo's age, this will I'll be represented by:
= (2 × x) + 4 = 2x + 4.
Therefore, the equation to solve the question will be:
= 2x + 4 + x = 31
3x + 4 = 31
3x = 31 - 4.
3x = 27
x = 27/3 = 9 years.
Richard's age will be:
= 2x + 4 = 2(9) + 4 = 18 + 4 = 22 years.
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