A can do a work in 8 days and B in 12 days. If they work on it together for 2 days then in how many days the remaining work will be completed by B?
Total work = Number of days×1 day’s work (efficiency) Total work = LCM (8, 12) = 24 unit 1 day’s work of A = 24/8 = 3 unit 1 day’s work of B = 24/12 = 2 unit 1 day’s work of (A + B) = 3 + 2 = 5 unit Now, 2 day’s work of (A + B) together = 2× 5 = 10 unit Remaining work = 24 – 10 = 14 Remaining work completed by B = 14/2 = 7 days
Inside a square land having perimeter equal to 116 metres, leaving aside a circular land of radius 14 metres, the remaining land needs to be levelled at...
The perimeter of 4 squares is 20 cm, 32 cm, 36 cm and 40 cm respectively. What will be the area of the square having perimeter equal to sum of edges of ...
Due to economic surge the price of eggs suddenly reduced by 40%. This enabled a woman to buy 64 more for $30. Then the reduced price per dozen is :
In triangle ABC, AD is the angle bisector of angle A. If AB = 8.4 cm and AC = 5.6 cm and DC = 2.8 cm, then the length of side BC will be:
The side of a square is equal to the perimeter of an equilateral triangle of area 36√3 cm2 . Find the area of the square?
Ramesh walked 6 km to reach the station from his house, then he boarded a train whose average speed was 60 km/h and thus he reached his destination. In ...
The income of a person is Rs.15000 and his expenditure is Rs.11000. In the next year his income and expenditure are increased by 8% and 16% respectively...
Two sides of the triangle are 14.8 cm and 10 cm. If height of the triangle corresponding to 14.8 cm side is 8 cm find the area?
...Length and breadth of a rectangle are in the ratio 3:5. If the perimeter of the rectangle is 33 cm more than the length of the rectangle, then find the ...
The angle of elevation of a pole from a point, which is 20 m away from the foot of the pole is 45°. Find the height of the pole.