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A retail appliance store priced a video recorder at 20 precent above the wholesale cost of Tk. 200. If a store employee applied the 10 percent employee discount to the retail price to buy the recorder, how much did the employee pay for the recorder?
Which of the following statement(s) are true with respect to the concept of ‘EFFICIENCY’ as used in mainstream economics? 1. Efficiency occurs when no possible organization of production can make anyone better off without making someone else worse off. 2. An economy is clearly inefficient if it is inside the Production Possibility Frontier (PPF). 3. At a minimum, an efficient economy is on its Production Possibility Frontier (PPF). 4. The terms such as ‘Pareto Efficiency’, ‘Pareto Optimality’ and ‘Allocative Efficiency’ are all essentially one and the same which denote ‘efficiency in resource allocation’. Select the correct answer using the code given below:
Pavan and Sravan are two persons. If Pavan works with his actual efficiency and Sravan twice of his actual efficiency then it takes 25 days to complete the work. But If Pavan works twice of his actual efficiency and Sravan with his normal efficiency then the work is completed in 20 days. How many days would it take if Sravan alone works with his actual efficiency (in Days)?
Efficiency of A is ¾ of the efficiency of B and efficiency of B is 80% of the efficiency of C. If A takes 120 days more than that of (B + C) working together to finish a work. In how many days; (A + B + C) can finish the whole work?
A and B can complete a work in 10 days and 15 days respectively. The efficiency of C is equal to the sum of efficiency of A and B. The efficiency of D is equal to the efficiency of A, B and C together. If A, B, C and D work together, they will complete the whole work in
Efficiency of Hermonie is 25% less than efficiency of Luna, efficiency of Luna is twice the efficiency of Dobbie. Hermione, Luna and Dobbie can complete their mutual assignment in 36 days. In how many days Hermonie independently complete same assignment.
Aman can complete a work in 30 days. If the efficiency of Aman is twice the efficiency of Parul and the efficiency of Parul is thrice the efficiency of Charu, find how many days will be taken to complete the work by all working together. 
A can do a piece of work in 8 days. The efficiency of B is half the efficiency of A, and the efficiency of C is 50% more than the efficiency of B. If all the three work together, what part of the work will they finish in 2 days?
A pipe fills 15% of a tank in an hour. From every next hour efficiency of pipe is three times of its previous hour efficiency. Then find first hour efficiency is what % of third hour efficiency
Tap A can fill 1/4th of tank in D hours and the remaining tank can be filled by tap B in (D + 16) hours. A is 40% more efficient than B. Both the taps are opened to fill the tank, but A was working with 2/7th of its efficiency and B was working with 2/5th of its efficiency, after few hours, they started working with their full efficiency, and remaining tank is filled in 10 hours. Find the time for which taps didn’t work with their full efficiency?