Home > Practice > Arithmetic Aptitude > Area > Miscellaneous
1. A typist uses a paper 30 cm by 15 cm. He leaves a margin of 2.5 cm at the top and bottom and 1.25 cm on either side. What percentage of paper area is approximately available for typing ?

Solution:
Area of the sheet = (30 × 15) cm2 = 450 cm2
Area used for typing
= [(30 - 5) × (15 - 2.5)] cm2
= 312.5 cm2
∴ Required percentage :
=(312.5450×100)%=69.4%≈70%

You must login to add comments. Login now.