Answer:
Bobs insurance expenses: $10,000
Wife and daughter insurance expenses: $10,000
John will be paying $2,500
Explanation:
Insurance will cover at least $10,000 of the expenses since John has insurance in the amount of 10/20.
Bob has a total of $11,000 in expenses meaning that insurance will cover $10,000 of it leaving only $1,000.
The wife and daughters expenses will be added to a total of $11,500 and after insurance pays the $10,000, there will be $1,500 left.
Add Bobs left over expenses ($1,000) and the wife and daughters left over expenses ($1,500) = you will get Johns total pay ($2,500)
Hope this helps! :)