The body on the left pan was balanced when 20g, 1g, 500mg, 10mg weights were placed

The body on the left pan was balanced when 20g, 1g, 500mg, 10mg weights were placed on the right pan. What is the mass of the body to be weighed?

To answer the question posed, let’s calculate the total mass of the weights on the right cup, taking into account the dimensions of the weights used.

1 g equals 1000 mg. Then – 500 mg will be equal to 0.5 g (500/1000). 10 mg will be equal to 0.01 g (10/1000).

Thus, bringing the weights used in our example to the dimension of grams, we get:

20 g + 1 g + 0.5 g + 0.01 g = 21 g + 0.51 g = 21.51 g.

Answer: The mass of the weighed body is 21.51 grams.