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Question
The given figure represents a weighing balance. The weights of some objects in the balance are given. Find the weight of each square and the circle.
Solution
From the weighing balance, we have
= ∗ + 
⇒ = 4 + ...(i)
And 
+ = + I + + + ∗
⇒ 20 + 20 = 2 + 14 + + 4
⇒ 40 = 2 + 18 + 4 + ...(Using (i))
⇒ 40 = 3 + 22
⇒ 3 = 40 – 22
⇒ 3 = 18
⇒ = 6 kg
From equation (i), = (4 + 6) kg = 10 kg
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