Given: Requirement of canteen for a week = 28 dozen Concept used: 1 week = 7 days 1 dozen = 12 bananas Calculation: Bananas required in 7 days = 28 dozens ⇒ Bananas required in 1 day =28/7 ⇒ 4 dozens Now, bananas required in 47 days = 4 × 47 dozens ⇒ 188 dozens ⇒188×12 ⇒ 2256 ∴ The number of bananas required for 47 days is 2256