How many words can the typist in 25 minutes? write and solve an equation to answer this

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?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Which pair of numbers is relatively prime? a. 105 and 128 b. 130 and 273 c. 205 and 350 d. 273 and 333