Answer:
8 tomatoes are required to balance 1 cabbage
Step-by-step explanation:
Given :
Two lemons and seven tomatoes are required  to balance one cabbage:
2 Lemons + 7 tomatoes = 1 cabbage         (equation 1)
two lemons balance one tomato
2 lemons = 1 tomato
put in equation 1:
1 tomato + 7 tomatoes = 1 cabbage
8 tomatoes = 1 cabbage
8 tomatoes required to balance one cabbage