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Let be the distance between station B and C = d Then, the Speed of Q = d/ 3 Speed of P = 2d/ 5 Therefore, Relative speed = d /3 + 2d/ 5 = 11d /15 Now, trains meet each other after 6am, when train P starts its journey. So, distance travelled by Q from 4am to 6am = 2 x d3 = 2d/3 Then, the Remaining distance will be = d – 2d /3 = d /3 Hence there would be time taken to cross each other = d/ 3 /11d /15 = 5/ 11 hr = 5 /11 x 60 = 27 min( approximately) Therefore, both of them cross each other at = 6:27 am
The average age of 26 children and their teacher's age are 22 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
Sum of the present ages of A, B, C and D is 40 years. After 3 years ratio of their ages is 5:3:2:3. What is C’s present age?
A man invested a sum of Rs. 25,000. He invested some part at 5% p.a. and remaining at 5.5% p.a.
How much money did he invest at 5% p.a.?
Six years ago, the age ratio of A to B was 5:6. In nine years, their age ratio will become 8:9. Determine the difference between their current ages.
The heights (in cm) of 9 basketball players in a tournament are as follows: 178, 182, 175, 180, 184, 179, 177, 181, 183
