Abag contains 8 red counters, 5 blue counters, and 3 green counters. what is the probability of not drawing a blue counter

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Could someone with number 1 and 2