I need help with 7x8 and 2/5

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

How do i solve uniform motion problems?