Answer
Find out the how many people adopted a manatee this year .
To prove
As given
last year 40 people adopted a mantee through Fia's foundation.
This year 15% more people adopted a manatee
15 % is written inthe decimal form

=0.15
15% of the last year 40 people adopted a mantee = 0.15 × 40
= 6
Total number of people adopted a manatee this year = 6 + 40
= 46
Therefore the people adopted a manatee this year be 46 .
Hence proved