Question
A can cultivate 3/5th of the land in 15 days
and B can cultivate 1/4th of the land in 10 days. In how many days working together A and B can cultivate 13/25th of the land?Solution
3/5th of the land is cultivated by A in 15 days Whole land is cultivated by A in = `(15xx5/3)`  = 25 days 1/4th of the land is cultivated by B in 10 days Whole land is cultivated by B in (10 × 4) days = 40 days (A + B)’s 1 day’s work = `(1/25+1/40)=((8+5)/(200))=13/200` days Whole land is cultivated by both in `200/13` days. 13/25th land is cultivated by both in = `(200/13xx13/25)` = 8 days
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 6cm, BC = 9cm then what is BD:CD?
A right triangular pyramid XYZB is cut from cube as shown in figure. The side of cube is 16 cm. X. Y and Z are mid points of the edges of the cube. What...
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 3cm, BC = 5cm then what is BD:CD?
In the given Figure, Find  angle BCD. If AB is a diameter & AB is parallel to CD.
If I is the incentre of ΔABC , if ∠BAC = 750 , then what is the measure of ∠BIC?
Find the area of triangle having sides in the ratio 2:4:5 & the perimeter of the triangle is 22 cm
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 ...
The radius of a circle is 25 cm, and the length of the chord is 14 cm. Find the distance between the chord and the centre of the circle. Â
The area of an equilateral triangle is 36√3 sq m. Its perimeter isÂ
Relevant for Exams:
