Two bullet trains, one from Jammu to Delhi and the other from Delhi to Jammu, start simultaneously. After they meet, the trains reach their destinations after 4 hours and 8 hours respectively. The ratio of their speeds is:
Let us name the trains as A and B. Given
Time taken by Train A to reach destination after meeting Train B = a = 4 Hours
Time taken by Train B to reach destination after meeting Train A = b = 8 Hours
At present, the ratio between the ages of Arun and Deepak is 3 : 2. After 13 years, Arun's age will be 34 years. What would be the age of Deepak after 8 years from now ?
OPtion
1) 14 Years
2) 15 Years
3) 17 Years
4) 18 Years
5) 19 Years
6) 20 Years
7) 21 Years
8) 22 Years
9) 23 Years
10) None of these
Solution
Let the present ages of Arun and Deepak be 3x years and 2x years respectively. Then,
3x + 13 = 34 => 3x = 21
x = 7
Deepak's present age = 2x = 14 years.
Deepak's Age after 8 years = 14 + 8 = 22 Years
In a cricket match, Team A scored 240 runs without losing a wicket. The score consisted of byes,
wides and runs scored by two opening batsmen: Ram and Shyam. The runs scored by the two batsmen are 11 times wides. There are 7 more wides than byes. If the ratio of the runs scored by Ram and Shyam is 5:6, then the percentage of run scored by Ram out of total score of Team A is:
Answers: 55
To be divisible by 5 unit digit of number should be either 5 or 0
We have total 7 digits out of which we cannot have 0 at the hundredâ€™s place (else it will become a 2 digit number)
Unit place is filled with 5
a. Tens place can be filled with 0
Hundreds place can now be filled with (1, 2, 3, 6, 7). We have 5 ways
So we have 1*1*5 = 5
b. Tens place can be filled with any of the digits (1, 2, 3, 6, 7). We have 5 ways
Hundreds place can now be filled with remaining of 4 digits. We have 4 ways
So we have 1*5*4 = 20
Unit place is filled with 0
Tens place can be filled with any of the digits (1, 2, 3, 5, 6, 7). We have 6 ways
Hundreds place can now be filled with remaining of 5 digits. We have 5 ways
So we have 1*6*5 = 30
99999 Ã· 8190 = 12, remainder = 1719
Hence, greatest number of 5 digits which is divisible by 18, 26 and 35
= 99999 - 1719 = 98280
Or we can also get the answer by simply = 8190*12 = 98280
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