Mr. Tom bought a $5000 piano for $5200. The extra amount was for tax. What was the percentage of tax for the piano?

%

Use the formula: Percentage of tax = Tax/Original amount × 100%

The tax: 5200 – 5000 = 200

The original amount: 5000

Thus, the percentage of tax: 200 ÷ 5000 = 0.04 = 4%