Rachel is a nurse she earns 12 vacation days after working 768 hours how many hours does rachel need to work to earn one vacation day? remember to include units example 12 hours

When you answer this can you explain

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost