So there is 99÷(2+ 1)=33 (adult)
33×2=66 (son).
Method 2: One adult eats two, and four children also eat two.
So an adult is equivalent to four children,
Suppose 99 people are all adults and want to eat 99×2= 198 (one).
Difference 198-99=99 (pieces)
Replace one adult with four children,
To change 99÷(4- 1)=33 (times),
So there are 33×2=66 children.
(2) Suppose 1 1 box of apples is removed, and there is18×11=198 (kg).
So the number of apple and pear boxes is the same,
Yes (1626-198) ÷ (18+24) = 34 (box)
So there are 45 boxes of apples and 34 boxes of pears.