Hi all This is my brothers year 9 1314yo maths test Can anyo

Solution

Total fund needed = 320 dollars.

For getting this amount he must raise 320/2 = 160 dollars.

For receiving 1.32 dollars he has to sell 1 dozen

Hence for receiving 160 dollars he has to sell = 160/1.32

= 121.21

Hence he has to sell 122 dozens to get funds of 320 dollars.