On one society A the price of an apple is $3 and the price of an orange is $7,

Question

while on socity B the apple and orange are the same price, $4.
society A people consume 10 apples and 8 oranges while societyB people consume
8 apples and 12 oranges. Which society is better off? Explain your
answer and any assumptions you make.

can anyone help me what assumption should i make ? weak axiom reveal preference and all society has same indifferent curve?

Calculate how much each group would pay for their fruit. You can decide that the group that pays less is the one better off (less cost). OR you could decide that one that eats the most fruit is better off (more healthy). OR you could decide that this is an impossible to prove problem as you are comparing two groups who buy a different number of different items for different prices.What kind of apples? What kind of oranges? Are any of the people allergic to oranges? (I am) Is this all the two groups have to eat?