2/5 of a number is what percentage of that number?

Examine the following sets of events. set a: {1, 5, 7, 9, 14} set b: {2, 5, 6, 8, 14, 17} which of the following represents the intersection of set a and set b ? {∅} {5, 14} {1, 2, 5, 6, 7, 8, 9, 14, 17} {1, 2, 6, 7, 8, 9, 17}

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?