Alok and Vinay can complete some work alone in 12 days and 20 days respectively. Both of them started the work together but Vinay left the work 4 days before the completion. For how many days both of them have worked together?
Let the total work be 60 units (LCM of 12 and 20) . Efficiency of Alok = (60/12) = 5 units/day Efficiency of Vinay = (60/20) = 3 units/day If Alok and Vishal worked together for 'N' days, then; (5 + 3) X N + (5 X 4) = 60 Or, 8N = 60 - 20 So, 'N' = (40/8) = 5
If p = q + 2, where q is the product of six consecutive positive integers, then which of the following is/are true?
a. p is a perfect cube
Present average age of A, B and C together is 44 years. Age of B is 12 Years hence from now will be 260% more than age of A. Four years ago from now whi...
The median 0f the given data will be 32, 25,33,27, 35, 29, and 30
The 8th term of a G.P is eight times of fifth term. What will be the first term when its 6th is 64?
Find the 5th term of the geometric progression whose first term is 128 and common multiple is 1/2.
What is the median of 5, 2.5, 7, 8, 1.5,14 and 4?
3600, 600, 120, 30, 10, ?
What is the mode of the given data?
5, 7, 9, 7, 3, 7, 5, 7, 8, 6, 7
nth term of an AP is 0. If AP is 63, 60, 57…, then find the value of n.
The mean of 10 observations is 8. One more observation is added, and the new mean becomes 9. What is the value of the 11th observation?
