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Which of the following statement is true?
The average of twelve numbers is 47. The average of the first six numbers is 49 and that of the last three numbers is 45.5. The 7th , 8th and 9th numbers are equal. Find the ratio of average of 7th and 8th number to that of 8th and 9th numbers.
Explanation:
Simple interest on a certain sum at certain rate of interest is 529% of the sum. If the number represents rate percent and time in years be equal then the rate of interest is—
If A had worked alone he would have taken 63 hours to do the task. What is B’s share, if A and B together on a task finishing it in 36 hours and they get paid Rs. 5,950 for it?
If it takes 42 days for a pond to get filled with rain water. If the level of water doubles each day. Then how long would it take to fill 1/16 of pond.
In what ratio should coffee costing Rs. 2800/kg be mixed with coffee costing Rs. 1750/kg so that the cost of the mixture is Rs. 2150/kg.
The average of 27 numbers is zero, out of them how many may be greater than zero, at the most?
Explanation: Max 26 numbers may be greater than zero.
A fraction is greater than twice its reciprocal by 7/15. What is the fraction?
If a nine-digit number 985x3678y is divisible by 72, find the value of x + y
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