Skip to main content

Quantitative Aptitude

Q. The railway fares of air conditioned sleeper and ordinary sleeper class are in the ratio of 4 :1. The number of passengers travelled by air conditioned sleeper and ordinary sleeper classes were in the ratio 3:25. If the total collection was Rs. 74,000 How much did air conditioner sleeper passengers pay?

a. Rs. 30,000
b. Rs. 20,000
c. Rs. 24,000 
d. Rs. 32,000

Solution :
Railway Fare        = Air - Conditioned   :    Ordinary Sleeper Class
                                            4                  :      1
No of passengers  = Air - Conditioned   :    Ordinary Sleeper Class
                                            3                  :      25
Collection             = Air - Conditioned   :    Ordinary Sleeper Class
                                       4 * 3                 :     1 * 25
                                         12                   :       25
 Sum of the collection = 12 + 25 = 37 which is equivalent to Rs. 74,000
     On equating we get, 1 = Rs.  2000

Hence, Amount received from Air - Conditioned sleeper passengers is 12 * 2,000 = Rs. 20,000

Comments

  1. Thank you for this sharing with solution.

    ReplyDelete
    Replies
    1. Your welcome. Truly trying to help you to the fullest.

      Delete

Post a Comment

Popular posts from this blog

Digital Sum Balance (D.S.)

A single digit is obtained by adding all the digits of a number is called Digital Sum Balance (D.S.)   Ex :  12 → 1 + 2 → 3 24 → 2 + 4 → 6 21 → 2 + 1  → 3 9876 → 9 + 8 + 7 + 6 → 30 → 3 + 0 → 3 3452 → 3 + 4 + 5 + 2 → 14 → 1 + 4 → 5 Or,  On Dividing the digits by 9, the obtained Remainder is Digital Sum Balance.  Ex :    12    ━━ = 3                9      24 ━━━ = 6      9    3452 ━━━━ =  5      9 KEY HIGHLIGHTS : The range of D.S. always falls from 0 to 9. When we add 9 to a number, its Digital Sum will not change therefore in order to calculate Digital Sum we need to cancel out  all the 9’s.  9 + 1 → 10 → 1 9 + 2 → 11 → 2 9 + 3 → 12 → 3 9 + 4 → 13 → 4 9 + 5 → 14 → 5 9 + 6 → 15 → 6 9 + 7 → 16 → 7 9 + 8 → 17 → 8 9 + 9 → 18 → 9 Example : 123 45 → 6 → Digital Sum ...

HCF and LCM

HCF and LCM FACTORS / DIVISORS = Numbers that divide any number completely, without leaving any Remainder are its factors. Example : Factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72.                    Factors of 90 are 1, ,2, 3, 5 , 6, 9, 10, 15, 18, 30, 45, 90 MULTIPLES =   Numbers that fall in tables of any given number are its Multiples. Examples  : Multiples of 12 are 12, 24, 36, 48, 60, 72, 84, 96……                       Multiples of 5 are 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 ….. HIGHEST COMMON FACTOR (H.C.F.) /  GREATEST COMMON DIVISOR (G.C.D.) =   Largest number that divides two or more than two given numbers. Examples : Calculate the  H.C.F. of 45 and 27  Sol : Factors of 45 = 1, 3, 5, 9, 15, 45       ...

Number System (No. of Zeros)

  How to Find Number of Trailing     Zeros in a Factorial or Product Under the topic of Number of Zeros , it is expected to find out the number of trailing zeros at the end of the number. In simple words, it can be said that to calculate the No. of Zeros at the  right side of the number. To make the things more clear, let us take a simple example to understand the concept of Number of Zeros Example : 1234057000 → No. of Trailing zeros →  3                  1050500000 → No. of Trailing zeros → 5                  1.5 x 10⁵ → No. of Trailing zeros → 4 Such Zeros that are represented at the end of the numbers are actually the Trailing Zeros. Now the next thing arises about the formation of Zeros in the Numbers. So, the fundamental regarding the formation of a Zero is the presence of a Pair of ...