In an express train, the passengers travelling in A.C. sleeper class, First class and Sleeper class are in the ratio 1 : 2 : 7, and rate for each class is in the ratio 5 : 4 : 2. If the total income from this train is 54,000 , find the income of Indian Railways from A.C. sleeper class.  Choose the correct option:
A) 12,000  B) 20,000  C) 22,000  D) 10,000  E) None of these
Let number of passengers = x, 2x, 7x   and Rate = 5y, 4y, 2y   Now, since income = Rate × Number of passengers   ∴ Income = 5xy, 8xy, 14xy   ∴ Income in ratio = 5 : 8 : 14   ∴ Income from A.C. sleeper class = 5/5+8+14×54,000   = 10,000   Answer 10,000
<result>D</result>
In an express train, the passengers travelling in A.C. sleeper class, First class and Sleeper class are in the ratio 1 : 2 : 7, and rate for each class is in the ratio 5 : 4 : 2. If the total income from this train is 54,000 , find the income of Indian Railways from A.C. sleeper class.