Question

Mala is y years old. Her sister is 4 years older than mala . Write expréssion in simplest form that represents the sum of ages of the sisters .

Answer 1

Answer:

$2(y+2)$

Step-by-step explanation:

Let

y --->Mala's age

x---> sister's age

we know that

$x=y+4$ ---> equation A

so

The sum of ages of the sisters is

$x+y$

substitute equation A in the expression of the sum of ages

$(y+4)+y=2y+4$

simplify

$2(y+2)$