Answer:
£70
Step-by-step explanation:
There are ten people and each person pays £56 so the total cost will be 10x£56 = £560
The boat will be hired out for the same price (£560) and there are eight people this time, so £560 divided by 8 = £70. This means each person will pay £70.
use the formula of centroid that is
= x1+x2+x3/3
C
45 to 18 it's easy
subtract 18 from 63 and there is your ratio