Question

The age of sara's father is thrice hers the age of sara's brother is 4 years more than her find an expression in terms of y for the sum of their ages whereas y represents sara's age

Answer 1

S = 5y + 4

Explanation:

f is Sara's father, y is Sara, b is Sara's brother and S is sum

3y = f

b = y + 4

S = f + y + b

= 3y + y + y + 4

= 5y + 4

Hope this helps!

Answer 2

`5y+4`

Explanation:

What we know:

- 3 ×
`y` is equal to Sara's father's age

-
`y` + 4 is equal to Sara's brother's age

-
`y` is equal to Sara's age

Sum of their ages = father's age + Sara's age + brother's age

Sum of their ages =
`3y+y+(y+4)`

Sum of their ages =
`5y+4`

I hope this helps!