how many pages did the book contain?

I read of a book on one day and of the remaining next day. If 100 pages of the book were still left unread, how many pages did the book contain?

Solution:

A drum of petrol is full. When 30 litres of oil are drawn from it, it is full. Find the capacity of the drum.

Solution:

More Solutions:

• The number of integers between -20 and -10.
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