The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy?

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A building contractor employs 20 male, 15 female and 5 child workers. To a male worker he pays Rs.25 per day, to a female worker Rs.20 per day and a child worker Rs.8 per day. The average wage per day paid by the contractor is__________?

A. Rs.20 B. Rs.21 C. Rs.22 D. Rs.23...

A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.150. Find the unknown rate of two blankets?

A. Rs.150 B. Rs.225 C. Rs.250 D. None...

The present average age of a family of five members is 26 years. If the present age of the youngest member in the family is ten years, then what was the average age of the family at the time of the birth of the youngest member ? (Assume no death occurred in the family since the birth of the youngest).

A. 18 years B. 14 years C. 20 years D. 16 years...

The average of first five multiples of 3 is____________?

A. 3 B. 9 C. 12 D. 15...

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is___________?

A. 1:2 B. 2:3 C. 3:4 D. 3:5...