Question
"Bhanu" is 37.5% more productive than "Anurag," the two
of them can finish the entire task in 40 days. Determine how long it took "Anurag" by himself to finish the entire taskSolution
ATQ, Let efficiency of ‘Anurag’ be ‘8p’ units per day Efficiency of ‘Bhanu’ = 1.375 × 8p = 11p units per day Total work = (11p + 8p) × 40 = (19p × 40) units Desired time = (19p × 40)/8p = 95 days
If the roots of the quadratic equation 7y² + 5y + 9 = 0 are α and β, then find the value of [(1/α) + (1/β)].
I. 27x² + 120x + 77 = 0
II. 56y² + 117y + 36 = 0
I. 8a2 – 22a+ 15 = 0
II. 12b2 - 47b + 40=0
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 19x² - 92x + 73 = 0
Equation 2: 17y² - 76y + 59 = 0
What is the speed of the stream if a ship takes 15 hours to travel 240 km in calm waters, given that the ratio of its speed against the current to its s...
I. 5x2 – 7x – 6 =0
II. 2y2 – 5y – 7 =0
I. 35x² + 83x + 36 = 0
II. 42y² + 53y + 15 = 0
I. 84x² - 167x - 55 = 0
II. 247y² + 210y + 27 = 0
I: x2Â + 31x + 228 = 0
II: y2 + 3y – 108 = 0
I. x2 + 28x + 96 = 0
II. y2 + 3y - 70 = 0
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