Some workers are painting a hall with length, breadth and height of 15 m, 30 m and 8 m respectively. If they can paint 10 m2 area from one liters of paint, find the amount of paint required to paint the walls and ceiling of hall.
At a certain time a building ^@15 \space m \space 40 \space cm^@ high casts a shadow ^@5 \space m \space 60 \space cm^@ long. At the same time find the height of a building which casts a shadow ^@5 \space m \space 20 \space cm^@ long.
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.
In an examination, Sandra attempted 17 questions correctly and secured 57 marks. If there were two types of questions i.e. of 3 marks and 4 marks, how many questions of 3 marks did she attempt correctly?