the answer is 54
48 / 4 is 12, so then divide that by 2 so they split equally because theirs combined added to 48, so 6.
6 * 9 is 54
We know that Bridget must correspond to the 7 since she got more than Caroline.
We don't yet know the total, but they've told us what the difference is between the two parts. We can use that!
7 times some number will be the amount that Bridget got, and Caroline got 3 times that same number.
The two parts are 3x and 7x.
7x - 3x = 40 is the difference between the two. (Bridget got 40 more than Caroline.)
We can solve this for x, then we can find 7x+3x=10x to get their total.
7x - 3x = 40
4x = 40
The total was 100 pounds.
(Bridget got 70 and Caroline got 30.)
answer: it is d