Question

四年级奥数△+△=◎+◎+◎ ◎+◎+◎=☆+☆+☆+☆ △+☆+☆+◎=400 △等于多少?

Answer 1

△+△=◎+◎+◎ --> 2△=3◎ --> ◎=2△/3

◎+◎+◎=☆+☆+☆+☆ --> △+△=☆+☆+☆+☆ --> △=2☆

△+☆+☆+◎=400 --> △+△+2△/3=400 --> 2△+2△/3=400 --> 8△/3= 400 --> △=150