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Ratio of efficiency A : B = 5 : 6 Time taken by A and B will be 6t and 5t respectively. Now, if B is 60% more efficient than A, the ratio of efficiency will become Ratio of B => 5 × 160/100 = 8 Ratio of time taken = 8t : 5t So, 6t/x = 8/5 x = 15t/4 Now, according to question 6t – 15t/4 = 18 => 9t/4 = 18 => t = 8 Therefore, time taken by A and B to complete the work will be 48 days and 40 days respectively In 12 days, total amount of work done will be, 12/48 + 12/40 = 22/40 Fraction of left work = 1 – 22/40 = 18/40 = 9/20
From a point "A" on the ground, the angle of elevation to the top of a tower measuring 12 meters in height is 30°. Determine the horizontal distance be...
If sec(2A + B) = 2 and cos(A + B) = (1/√2) , find the value of {sec 2B + tan (A + B) } given that 0o < A, B < 90o
A man is standing at a point 40 meters away from a tower. The angle of elevation of the top of the tower from the point is 45°. After walking 20 meters...
Find the value of sin(θ) if 2sinθ = tanθ, for 0 < θ < 90°.
From a point on the ground, the angle of elevation of the top of a building is 45°. After walking 10 meters towards the building, the angle of elevatio...
Find the simplified value of:
If cos4 B - sin4 B =
