A typist uses a paper 30 cm by 15 cm. He leaves a margin of 2.5 cm at the top as well as at the bottom and 1.25 cm on either side. What percentage of paper area is approximately available for typing?
Q1. A typist uses a paper 30 cm by 15 cm. He leaves a margin of 2.5 cm at the top as well as at the bottom and 1.25 cm on either side. What percentage of paper area is approximately available for typing?
Answer: 70%
Explanation: Typing area = (30−5)×(15−2.5) = 25×12.5 = 312.5 cm²; total = 450 cm². Percentage = 312.5/450 ≈ 69.4% ≈ 70%.