(1), Cong Cong breakfast with bread: eggs: milk = 100: 50: 200. After simplification, bread: eggs: milk =2: 1:4 (2). If Cong Cong's mother prepared 490g breakfast in the same proportion, calculate all kinds of breakfast. Bread: egg: milk = 2: 1: 4 from (1). The total share is 2+ 1+4=7. Therefore, bread needs 490*2/7= 140, and eggs need 490 * 1/7 =.