Q.

Balance the scale by using appropriate weights on both sides.

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a

Add 2 on the right and 5 on the left.

b

Add 2 on the left and 5 on the right.

c

Add 2 and 5 both on the left side. 

d

Add 2 and 5 both on the right side.

answer is A.

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Detailed Solution

The answer is option 1. It is already heavier on the left side, so the lighter weight must go on that side.

Adding 2 on the left and 5 on the right side,

4 + 2 = 6 and 1 + 5 = 6.

Hence the scale will be balanced.

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Balance the scale by using appropriate weights on both sides.