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Both bags $y$ on the left pan have the same weight; the numbered blocks are weights in kg. What is $y$ if the pans balance?

Class 7Checking Solutions by TrialSimple Equations

A6 kg
B5 kg
C8 kg
D4 kg

Step-by-Step Solution

Left:

2 y + 2

. Right: 10. Try

y = 4 : 2 \times 4 + 2 = 10

✓. (5 kg comes from 10 ÷ 2, forgetting the 2 kg weight on the left.)

Answer: D) 4 kg

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