2.1-(1/5+1/6) = 19/30 A: The watermelon planting area accounts for19/30 of this land.
3, 24 ÷ 20 = 1.2 (times) A: It is 1.2 times that of girls, and 5/6 of that of boys.
4.3/5+1/8 =1/40 (ton)1/40+3/5 = 35/ 40 (ton) Answer: Grade 5 or 6 * * * garbage.
The big one is the denominator, and the small one is the numerator.