Chapter 8: Comparing Quantities

Q1. Find 12% of 850.

Solution

12/100 × 850 = 102

Q2. A shirt costs Rs. 800 after 20% discount. Find the marked price.

Solution

80% of MP = 800
MP = 800 × 100/80 = Rs. 1000

Q3. Find the compound interest on Rs. 5000 at 10% per annum for 2 years.

Solution

A = P(1 + r/100)² = 5000(1.1)² = 6050
CI = 6050 - 5000 = Rs. 1050