Zak is 6 years older than half his sister bellas age bella is 6 years old

Zak's is 9 year old

Step-by-step explanation:

Let the age of Zak be x and his sister's age be y

Given ; zak is 6 years older than half his sister bellas age

i.e , x = 6 + y/2 ... so this is the equation in which we put the value of Bella's age to get the age of Zak !

So, when Bella is 6 years old

i.e, y = 6

x = 6 + 6/2

x = 6 + 3

x = 9

So, Zak is ( x ) 9 year old !

55% are girls and 45% are boys : ) hope this

step-by-step explanation: