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Let the speed of train C be ‘x’ km/hr. Then, speed of train D = (x + 21) km/hr Time = 3 hours 40 minutes = 3(40/60) = 3(2/3) = 11/3 hrs According to the question, => Speed = Distance/ Time => (x + x + 21) = 495/(11/3) => 2x + 21 = 45 × 3 => 2x = 135 - 21 => x = 57 Speed of train C = x = 57 km/hr Speed of train D = (x + 21) = 78 km/hr
Which of the following is NOT included in the subject matter of the Concurrent List related to social security?
In the first month, the income of Q increases by 40%. In the second month, his income decreases by 40%. What will be the percentage increase or decrease...
Who was the chief proponent of Vishishtadvaita subschool of Vedanta?
The names of 14 students from section A, 15 students from section B and 16 students from section C were selected. The age of all the 45 students was dif...
P and Q together started a business with initial investment in the ratio of 1:11, respectively. The time-period of investment for P and Q is in the rati...
How many lines other than those shown in the figure are required to join each corner with another?
If the mean of 3, 4, 9, 2k, 10, 8, 6 and (k + 6) is 8, and mode of 2, 2, 3, 2p, (2p + 1), 4, 4, 5 and 6 (p is a natural number) is 4, then the value of ...
X and Y can complete a piece of work in 8 days and 12 days, respectively. If they work on alternate days, with X working on the first day, how long will...
The sum of three numbers is 136. If the ratio between the first number and the second number is 2 : 3 and that between the second and the third number i...
Which of the following statements is/are correct in regards to the IMF?
1.The IMF formally came into existence on 27 December 1945
2.189...
