1) A recipe needs spoons of salt and the remaining spoons of pepper.
The fraction of spoons of pepper to be added \(=\) . (Note: Insert the answer without reducing the fraction.)
2) Roby carried kilograms of luggage, whereas Bob carried kilograms of luggage.
i) The difference between both Roby and Bob's luggage \(=\) .
ii) Whose luggage is heavier?