Answer:
3 1/3 I am assuming that you cannot by 1/3 of an aubergines, so you would need to buy 4. if you can buy a partial one then it would be 3 1/3
Explanation:
 =
 = 
 Set up a proportion and then cross multiply and solve for a
 Set up a proportion and then cross multiply and solve for a
3a = 10 Divide both sides by 3
a = 
 = 3 1/3
 = 3 1/3