Book
Maths Puzzle
Age Problem
What if the teacher asks what is the half of the sum of the brother of my cousin which is 12 and my sister which is 14 after 26 years from my birth... i am 8 years old?
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Book Other Question
An airline has 2000 passengers each day paying $100 each, and knows that for each $10 increase in price they lose 50 passengers. What would be the equation that would determine their maximum revenue?
The length of a rectangular park is 4 m longer than the width. If the area of the park is 140 m^, find the length and the width.