Video Transcript
Choose the balanced weights from
the following figures.
We’re shown two different sets of
scales. We’re being asked to choose the set
which are balanced. We can work out the answer in two
ways. We can tell just by looking at
these scales that they’re balanced. And we can check by counting the
number of blocks on each side of the scales. Each side of the scales have three
blocks. So, each side of the scale has an
equal number of blocks. This is why the scales are
balanced. Three blocks weigh the same as
three blocks. The weight on each side of the
scales is equal. So, these are the balanced
weights.
On the first set of scales, we can
see that this side is the heaviest. Three blocks weigh more than two
blocks. To make these scales balanced, we
would have to add one more block to this side of the scales.
