During a sale the price of a pair of shoes was reduced $12. The shoes regularly sell for $48. The price reduction is what percent of the regular price?

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.