Tiffany collects perfume bottles. she has 99 bottles in her collection. 2/3 of her perfume bottles are made of crystal. how many of the perfume bottles in tiffany’s collection are made of crystal?

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