(2) Part and all

2 (1) Answer: The planting area of eggplant is the largest. Because other vegetables refer to two or more vegetables.

(2) 315% = 20 hectares

(3) Write your own questions.

3( 1) A: Other expenses account for 25% of Li Hongjia's monthly expenses.

(2) 1500×20%=300 yuan.

A: Li Hongjia spends the most on mortgage repayment every month. Because it accounts for the largest proportion.

4 (1) (20 ÷10%) × 60% =120 people.

(2010%) × 30% = 60 people.

(2)(60-20)÷20=200%