Start learning 50% faster. Sign in now
Let the work ‘A’ and ‘B’, can do in 1 day be ‘a’ units and ‘b’ units, respectively. Let they takes ‘p’ days to build the wall, together Therefore, Total work = (a + b) × p units …….. (1) According to the question, Time taken by ‘A’ to build the wall alone = 1.4p days Therefore, total work = 1.4p × a units….. (2) From equation (1) and (2), we get 2.5b = a Therefore, total work to be done = (a + b) × p = 3.5bp units Time taken by 'B' to build the wall = 3.5bp/b = 3.5p days Therefore, required percentage = (3.5p – p)/p} × 100 = 250% more time
In the figure P is a point which is 12 cm away from the centre of the circle O. A line drawn from P point cuts circle at point A and B respectively. If...
If G is the centroid and AD, BE, CF are three medians of ∆ABC with area 54 cm 2 , then the area of ∆BGD is?
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 angles of the triangle are in the ratio of 1:2:3, then what is the smallest angle?
If O is circumcentre of acute angled triangle ABC, if ∠ BOC = 60˚ then ∠BAC = ?
A solid cylinder has radius of base 14 cm and height 15 cm. 4 identical cylinders are cut from each base as shown in the given figure. Height of small c...
A triangular field has sides measuring 50 m, 78 m, and 112 m. Determine the height of the field corresponding to the longest side and also find the area...
In ABC,D is a point on side AB such that BD = 2 cm and DA = 3 cm. (E is a point on BC such that DE) AC, and AC = 4 cm. Then (Area of A BDE) : (Area of ...
What is the sum of the smallest and the largest angles of th...