Question

Give the difference in kg between a 25 kg weight and a 2400 gram weight

Answer 1

The answer is 22.6kg

Explanation:

kilo means 1000 i.e. 10³

Hence,

1 kilogram = 1000 gram

`1 gram = (1)/(1000) kilogram\\2400 gram = 2400*(1)/(1000) \\2400g = 2.4kg`

Now,

The both quantities are in kg i.e. 25kg and 2.4kg.

We can add zeros after an integer by putting decimal point after least significant figure hence we can write 25 as 25.0

Taking difference of these two:

25.0-2.4 = 22.6kg