The average age of a man and his son is 33 years. The ratio of their ages is 8 : 3 respectively. What is the man's age?
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The area of the circumcircle of the equilateral triangle whose one side lies on the diagonal of a square with side 4 cm is (use π = 3.14)
Total expenses of a boarding house are partly fixed and partly varying linearly with the number of boarders. The average expenses per boarder is Rs. 700 when there are 25 boarders and Rs. 600 when there are 50 boarders. What is the average expense per boarder when there are 100 boarders?
In what time will Rs. 500 give Rs. 50 as interest at the rate of 5% per annum simple interest?
1 docs48 tests

1 docs48 tests
