21 binders can bind 1400 books in 15 days. How many binders will be required to bind 800 books in 20 days'?
Q1. 21 binders can bind 1400 books in 15 days. How many binders will be required to bind 800 books in 20 days'?
Answer: 9
Explanation: The correct value is 9. Apply the formula or arithmetic step shown in the question and