Answer:
4:1
Step-by-step explanation:
Dan has twice what Eli has ( D= 2 x E )
and Carol had twice what Dan had ( C = 2 x D )
what I did is tried to replace the numbers with something easier , then symplyfying it .
for example , let's suppose Eli had 2 coins
this means Dan had 4 coins,
and Carol had 8 coins .
carol 8 : 2 Eli
then symplify it by dividing each side by two .
so carol has 4 and Eli has 1 .
That's how I got 4:1.
sorry if this is wrong Im not too good at maths❤️