Rafi went to the stationers and bought things worth Tk. 25 out of which 30 paisa went on sales tax on taxable purchases. if the tax rate was 6%, then what was the cost of the tax-free items?

Question: Rafi went to the stationers and bought things worth Tk. 25 out of which 30 paisa went on sales tax on taxable purchases. if the tax rate was 6%, then what was the cost of the tax-free items?

Solution:
Let, cost of taxable purchases is x taka

ATQ,
0.06x = 30/100
⇒ x = 30/(100 × 0.06)
= 5 taka

∴ The cost of the tax-free items was = 25 - 5 - 0.3
= Tk. 19.7