Question

Comment on the count of weights to be used to balance the given 2 kg with the available weights of 1 kg and 500 g?

Answer 1

Available weights are 500 g and 1kg
The weight to be balanced is 2 kg
1 kg $\times$ 2 = 2 kg
500 g $\times$ 4 = 2 kg
1 kg $\times$ 1 + 500 g $\times$ 2 = 2 kg
Thus with a count of two 1 kg weights, four 500 g weights and with a combination of one 1 kg and two 500 g weights, the weight 2 kg can be balanced.