Question
If a tank can be filled by a tap in 15 hours, but due to
an outlet, it actually takes 5 hours longer to fill the tank, find the duration in which the outlet alone would empty the tank?Solution
Let tap ‘A’ fill the tank and tap ‘B’ empty the tank. Taking LCM of 15 and 20 = 60 Efficiency of A = 4 Efficiency of (A – B) = 3 Efficiency of B = 4 – 3 = 1 Tap B will empty the tank = 60/1 = 60 So, tap B will empty the tank in 60 hours.
Find the radius of the sphere whose volume is 562.5π cm3
What will be inradius of a right angle triangle whose base is 11 cm & height is 60 cm ?
The lengths of three medians in a triangles are 15 cm, 20 cm, 25 cm. What is the area of that traingle (in cm 2 )?
If the volume of a cube is 64cm³, then the diagonal of cube is
In a triangle ABC, AB = 13 cm, BC = 14 cm, and AC = 15 cm. Find the area of the triangle and the length of the altitude from vertex A to side BC.
If I is the incentre of ΔABC , if ∠ BAC = 450 , then what is the measure of ∠ BIC?
In the figure given below, AC = 16 cm and BF = 5 cm. If AE:CE = 5:3, then find the perimeter of ΔABC.
If I is the incentre of ΔABC , if ∠ BAC = 700 , then what is the measure of ∠ BIC?
In a circle, the chord AB is 12 cm, and the perpendicular from the center O to the chord AB bisects it at point P. If OP = 5 cm, what is the radius of t...
Relevant for Exams:
