Question
Ram and Shyam can complete a
piece of work together in 15 days. If Shyam is 50% more efficient than Ram, find how long Shyam alone will take to finish the work.Solution
ATQ, Let the efficiency of Ram alone = 6 units/day. Then, efficiency of Shyam alone = 6 + 6 × 0.5 = 9 units/day. Total work = (6 + 9) × 15 = 225 units. Thus, time taken by Shyam alone to complete the work = 225 ÷ 9 = 25 days.
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when x =4 and y =-6 then find the value of 27x³ +58x²y +31xy² +8y³?
Given that x = 80, y = -35 and z = -45, Determine the value of [(x³ + y³ + z³)/10³]
22% of ‘x’ is equal to 66% of ‘y’, then find the value of x: y.
If, 4x + y = 10, and 2xy = 8, and 4x > y, then find the value of 64x³ – y³.
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