When cost of living index number is 280,
then wage = ₹ 13500
∴ Cost of living index number is 340, then wage
\(=\frac{13500 \times 340}{280}\)
\(=\frac{4590000}{280}\)
= ₹ 16392.86
But the wage of a worker becomes ₹ 14750.
So, the loss of the worker = ₹ (16392.86 – 14750) = ₹ 1642.86