Is 0.34375 rational or irrational

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

How can (square root of 25) ^2 be rewritten?

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.