2.37/5=7.4 Because there are still two people, it will take eight times.

3. Half of the cakes weigh 3800-2100 =100g, while all the biscuits weigh 2200g, so the empty cans weigh 3800-2200= 1600g.

If Spider X is turned off, it will have 8x feet. Beetle 8-x only has 6(8-X) description: Beetle has 6 feet.

8X+48-6x=54

2X=6

X=3

5. Friday

6. Suppose there are X boys and the value is 5x, then girls (50-x) plants (150-3x).

5x- 150+3X=90

8X=240

X=30

7. There are 15 articles

(* _ _ *) Hee hee ... 5 and 7 are not necessarily right.