Answer:
2 ÷ 3
Step-by-step explanation:
Let us suppose the money be 90
Since caroline gets 1 by 9 of the money i.e. 10
And, the remaining money would be distributed among Colin and sarah in the ratio of 1:3
So, the remaining money would be
= 90 - 10
= 80
So, the sarah could get
= 80 × 3 ÷ 4 ÷ 90
= 60 ÷ 90
= 20 ÷ 30
= 2 ÷ 3