If the sales tax on a purchase worth Rs 60 is Rs 4.20. What will be the sales tax on the purchase worth of Rs 150?
Given sales tax on the purchase worth of Rs 60 = Rs 4.20
Sales tax on the purchase worth of Rs 1 = Rs 4.2060
Hence, sales tax on the purchase worth of Rs 150 = (4.20/60) × 150
= Rs 10.50
