It takes machine A, p hours to manufacture a deck of cards that machine B can manufacture in q hours. If machine A operates alone for r hours and is then joined by machine B until 100 decks are finished, for how long will the two machines operate simultaneously?
The graph below shows the average daily circulation (in thousands) of two newspapers (A and B) for ten years. Find the average daily circulation of B in the year when combined average daily circulation was minimum.
Kenneth's roll number is a two digit number. His friend Kimberly's roll number has the same digits as Kenneth's roll number, but with digits interchanged. If they add their roll number, and divide the sum by 11. Find the remainder of this division.
Can not be determined without knowing the roll number