Answer this for brainilest and 30points (no links or internet answer or you will get flagged

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?