Let the speed of the boy in still water be x kmph. Then, (x + 6) × 4 = (x – 6) × 7 => 4x + 24 = 7x - 42 => 3x = 66 => x = 22 kmph
Find the area of the triangle formed by the points A(2, 3), B(-1, -4), and C(5, -2).
If P(A) = 0.7, P(B) = 0.5 and P (B/A) = 0.3, find (i) P(A/B) (ii) P(A ∪ B)?
Find the co-ordinate of the centroid of a triangle whose vertices are (1,3), (2,1) and (2,5)?
Find the area of triangle formed by lines 4x-6y=24 x-axis and y-axis?
Find the co-ordinate of a point which divides the join of (3,2) and (3,2) internally in the ratio of 2:3?
The minute hand of a watch is 2 cm long. How far does its tip move in 45 minutes? (use π = 3.14)
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?
