kim: k
laura: l
molly: m
"The ratio of the amount Kim gets to molly is 2:5"
k/m=2/5 >>>> 5k=2m
"Kim gets £105 less than molly gets"
k=m-105
solve these two equations together:
5k=2m
k=m-105
---------------
k=70
m=175
that means Laura's share is 385-70-175 = 140£
Then the percentage of £385 Laura gets is 140/385 = 4/11 = 36.36%
I hope that helps
