Ratio Problem: Calculating Number of Men

Math Problems

• If there are 60 people and the ratio of men to women is 5:7, the number of men is 25.
• Muhammad is 20 cm taller than his brother Khalid, and their combined height is 310 cm; Muhammad's height is 165 cm.

History

• World War I started in 1914.

Paper Production

• The first paper money was made from Mulberry bark.

Geography

• The capital of Canada is Ottawa.
• Machu Picchu is located in Peru.

Biology

• Hummingbirds are the only birds that can fly backwards.

Literature

• William Shakespeare wrote "Romeo and Juliet".

Physics

• The unique physical property of water at its freezing point is its increased density.

Chemistry

• The chemical element with the symbol "Au" is Gold.