Start learning 50% faster. Sign in now
The speed of train B is 40% less than the speed of train A.
Let’s assume the speed of train A is 10y.
speed of train B = 10y of (100-40)%
= 10y of 60%
= 6y
The ratio between the length of train A and B is 10:9 respectively.
Let’s assume the length of train A and B is 10z and 9z respectively.
Train B can cross a ‘d’ meter long platform in 16 seconds.
(9z+d)/16 = 6y
9z+d = 96y Eq.(i)
Train A can cross a pole in 8 seconds.
10z/8 = 10y
z = 8y Eq.(ii)
Both of the trains cross each other in 9.5 seconds.
(10z+9z)/9.5 = 10y+6y
19z/9.5 = 16y
2z = 16y
z = 8y Eq.(iii)
Here Eq.(ii) and Eq.(iii) are the same. In Eq.(i) and Eq.(ii) two and three variables are available. So we cannot determine the value of any of the variables from the given information.
The parallel sides of a Trapezium is 20 and 46cm respectively and the non-parallel sides were 10 cm and 24 cm respectively. If the non-parallel sides we...
What is the mandatory wage limit for EPF membership as of 01.09.2014?
Musi River, which was seen in the news, is a tributary of which river?
The owner of the business is treated as a creditor of the business according to which of the following concept?
Age of ‘A’ after 12 years will be three time of his age 20 years ago. Eight years hence from now, ratio of ages of ‘A’ and ‘B’ will be 2:3, ...
The average score obtained by 24 students in a class test is 68 marks. The top place was shared by 3 people who got the same score. If the lowest score ...
A, B, C, D, E and F are sitting around a circular table facing the centre. B sits second to the right of D. A is an immediate neighbour of E and C. E si...
What kind of penalty is there on an “illegal strike”?
Who proposed the principle of jumping jeans?
Which of the following statements is/are correct?
(1) Twelfth Schedule deals with the matters of Municipalities.
(2) 74th Constitutional...