Level 1
Adam spends 214 h reading a book on Monday.
He continues reading the book for 135 h on Tuesday.
He finishes reading the book on Wednesday.
He spends 512 h altogether reading the book.
How long does he spend reading the book on Wednesday?
Level 2
A jug contains some milk.
Adam drinks 710 litre of milk.
Bryan drinks 25 litre of milk.
There is 14 litre of milk left in the jug.
How much milk is there at first in ℓ?
Give the answer in fraction.