A contractor undertakes to get a work done in 50 days by 50 labourers. After 40 days, he realizes that only 50% of the work is done. How many more men should be employed so that the work in complete on time?
A man starts from his house and walks 12 km. in Smith direction, then he turns right and goes 7 km; again he turns right and goes 12 km. and finally turns right and goes 7 km. At what distance is he from the starting point and in which direction.
HE IS ON STARTING POINT
The average of eight numbers is 14. The average of six of these numbers is 16. The average of the remaining two numbers is
Total sum of remaining two
= ( 8 X 14 - 6 X 16) = 16
Average of these two numbers is 16 / 2 = 8
A boat against the current of water goes 9 km/hr and in the direction of the current 12 km/hr. The boat takes 4 hours and 12 minutes to move upwared and downward direction from A to B. What is the distance between A and B
Therefore, d = 21.6 km
If sum of integers from 101 to 200, inclusive is subtracted from the sum of integers from 201 to 300 inclusive, then the result is