Question
‘Neha’ can complete a task in 90 days. She worked for
54 days and then left. The rest of the task was completed by ‘Karan’ in 24 days. How much time would Karan take to finish 80% of the task?Solution
ATQ,
Neha’s work = 54/90 = 3/5
Remaining = 1 - 3/5 = 2/5
Karan does 2/5 in 24 days
Full work time for Karan = 24 × (5/2) = 60 days
80% work = 0.8 × 60 = 48 days
Angle bisectors of Q and R meet at point S, inside the triangle PQR. If angle QSR = 128˚ , then the measure of angle P is:
The sum of the length, breadth, and height of a cuboid is 30 cm. If the length of the diagonal is 17 cm, find the total surface area of the cuboid.
- Among the following two shapes, which has a greater volume?
I) A cuboid measuring 4 cm × 6 cm × 12 cm
II) A cube with each side measuring 7 cm<... A square and a rhombus lie on a common base and the rhombus is inclined at an angle of 30° with the base. Find the ratio of the areas of the square and...
B is 25 percent more than C and C is 73 percent less than D. If B is 729, then what is the value of D?
The radius of the base of a cone is 12 cm, and its height is 16 cm. The cone is melted and recast into smaller cones of radius 3 cm and height 4 cm. How...
A street of width 25 metres surrounds from outside a rectangular garden whose measurement is 190 m × 220 m. The area of the path (in square metres...
Length and breadth of a rectangular room are in the ratio 4 ∶ 5. The perimeter of the room is 180 m. Cost of flooring is Rs. 75 per square metre. Find...
In a store room there are one windows and one door. The area of the windows is 1.25m2, which is (¼) of the area of the door. The cost of pai...
The volume of a cube is 4096 cm³. If the cost of painting the cube is Rs. 4 per cm², then find the cost of painting five faces of the cube.
Relevant for Exams:
