Question

A balanced scale has a bag and 7 blocks on the left tray and 16 blocks on the right tray. If you remove 7 blocks from both trays to keep the scale balanced, how many blocks are in the bag?

9

16

23

7

Answer 1

9, if you take 7 away from the side with the bag you are just left with the bag, and if you take 7 away from 16 you have 9, so the bag must have 9 if the weight of the bag is negligable

Answer 2

so its 9

Answer 3

yes

Answer 4

if the bag has no weight

Answer 5

the bag alone has no weight

Answer 6

so the answer is 9 or 16

Answer 7

9

Answer 8

7+x = 16 if we take away 7 from both sides we have x = 9