Kim, laura and molly share £385. the ratio of the amount kim gets to molly is 2: 5. kim gets £105 less than molly gets. what percentage of £385 does laura get?

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