Let B be closed after x minutes. Then, Part filled by (A+B) in x min. + part filled by A in (18 – x) min. = 1 x (1/24 + 1/32) + (18 – x ) × 1/24 = 1 ⟹ 7x/96 + (18 - x)/24 = 1 ⟹7 x + 4 (18 – x) = 96 ∴ x = 8 ∴ Hence, B must be closed after 8 minutes
Find the co-ordinate of the centroid of a triangle whose vertices are (1,3), (2,1) and (2,5)?
Which of the following is NOT a known factor to uniquely determine a plane?
Find the area of the triangle formed by the points A(2, 3), B(-1, -4), and C(5, -2).
Find the area of triangle formed by lines 4x-6y=24 x-axis and y-axis?
Determine the co-ordinates of the point where the line through the points A (3, 4, 1) and B (5, 1, 6) crosses the XY- plane?
In a race A beats B by 120m. B beats C by 260m and A beats C by 300m what is the length of race?
Find the equation of the circle passing through the points (1, 2) and (2, -1), and whose center lies on the line x - 2y + 3 = 0.
