Question

the age of my sister is four more than my age sum of our ages is 20 find our ages
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Answer 1

Answer:

given,

age of my sister = four more than my age.

sum of our ages = 20 years.

to find :-

ages of me and my sister.

$\huge\sf\underline{solution}$

let,

age of me = x

$\sf\implies$ age of my sister = x + 4

according to question : -

x + x + 4 = 20 years

2x + 4 = 20years

2x = 20years - 4

2x = 16years

x = $\sf\dfrac{16years}{2}$

x = 8years

$\sf\therefore$ age of me = x = 8years

age of my sister = x + 4 = 8 + 4

= 12 years