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ATQ, Let total work be 15 units {LCM of 5 and 15} Efficiency of ‘Pawan’ = (15/5) = 3 units/hour Eiciency of ‘Qureshi’ = (15/15) = 1 units/hour Work done by ‘Pawan’ and ‘Qureshi’ in every 2 hours = (3 + 1) = 4 units So, work done in irst 6 hours = 4 × 3 = 12 units Remaining work = (15 – 12) = 3 units Since, ‘Pawan’ is next in line to do the work, he will finish the remaining work in (3/3) = 1 hour So, total time taken by ‘Pawan’ and ‘Qureshi’ to do the work together = 1 + 6 = 7 hours Therefore, the work will be inished at 4:00 p.m. i.e., 7 hours after ‘Pawan’ started working.
I). p2 + 22p + 72 = 0,
II). q2 - 24q + 128 = 0
I. 35x² - 24x – 35 = 0
II. 72y² - 145y + 72 = 0
A and B are the roots of equation x2 - 13x + k = 0. If A - B = 5, what is the value of k?
If x2 - 3x - 18 = 0 and y2 + 9y + 18 = 0, which of the following is true?
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 29x² - 177x + 270 = 0
Equation 2: 31y² - 152y + ...
I. 8/(21x) - 2/7 = 0
II. 16y² - 24y +9 = 0
I. 2x² + 11 x + 15 = 0
II. 2y² - 19 y + 44 = 0
I. 3x2 - 14x + 15 = 0
II. 15y2- 34 y + 15 = 0
I. 2p2 - 3p – 2 = 0 II. 2q2 - 11q + 15 = 0
I. 3p2 - 11p + 10 = 0
II. 42q2 + q -1 = 0