Help please for a quiz

Plz.yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?

The tile along the edge of a triangular community pool needs to be replaced? ?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.