Katherine bought oranges oatmeal and train store. She spent all her money. she spend 5/14 of her money on oranges and 4/14 on oatmeal. what fraction of her money did Katherine spend on tea

Let F = the number of fiction books Let N = the number of non-fiction books

F = (2/5) N

F+N=56 substitute (2/5) N for F in the sum equation

(2/5) N+N=56

(2/5) N + (5/5) N = 56

(7/5) N = 56

N = (5/7) 56 = 5 (8) = 40 non fiction books

F = 56-40 = 16 fiction books

16 is (2/5) (40)