Answer:
Share of Eli, Freda and Geoff will be $180, $260, $360 respectively.
Step-by-step explanation:
Eli, Freda and Geoff were given $800 to share in the ratio of their age.
Their ages were 9 years, 13 years and 18 years respectively.
Ratio of their ages will be 9 : 13 : 18
Now share of Eli will be = 
= 
= $180
Share of Freda will be = 
= $260
Share of Geoff will be = 
= $360
Therefore, share of Eli, Freda and Geoff will be $180, $260, $360 respectively.