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In a row of students, Ramesh is 9th from the left and Suman is 6th from the right. When they both interchange their positions then Ramesh will be 15th from the left. What will be the position of Suman from the right?
- a)12th
- b)13th
- c)15th
- d)6th
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
In a row of students, Ramesh is 9th from the left and Suman is 6th fro...
Given information:
- Ramesh is 9th from the left in a row of students.
- Suman is 6th from the right in the same row of students.
- When they interchange their positions, Ramesh becomes 15th from the left.
Understanding the problem:
We need to determine the new position of Suman from the right after Ramesh and Suman interchange their positions.
Solution:
Let's assume the total number of students in the row is 'n'.
Step 1: Determine Ramesh's initial position from the right
Since Ramesh is 9th from the left, we can calculate his position from the right using the formula:
Position from right = Total students - Position from left + 1
So, Ramesh's initial position from the right = n - 9 + 1 = n - 8
Step 2: Determine Suman's initial position from the right
Since Suman is 6th from the right, his initial position from the right = 6
Step 3: Interchanging their positions
When Ramesh and Suman interchange their positions, Ramesh becomes 15th from the left. This means that Suman's initial position from the right becomes Ramesh's new position from the left.
Step 4: Determine Ramesh's new position from the left
Ramesh's new position from the left = 15
Step 5: Determine Suman's new position from the right
Since Suman's initial position from the right becomes Ramesh's new position from the left, we can calculate Suman's new position from the right using the formula:
New position from right = Total students - New position from left + 1
New position from right = n - 15 + 1 = n - 14
Step 6: Equating Ramesh's new position from the left and Suman's new position from the right
Since Ramesh's new position from the left is 15 and Suman's new position from the right is n - 14, we can equate them:
15 = n - 14
Step 7: Solve for n
n - 14 = 15
n = 15 + 14
n = 29
Step 8: Determine Suman's new position from the right
Using the value of n, we can calculate Suman's new position from the right:
Suman's new position from the right = 29 - 14 = 15
Therefore, Suman's new position from the right is 15. Hence, the correct answer is option 'A'.
- Ramesh is 9th from the left in a row of students.
- Suman is 6th from the right in the same row of students.
- When they interchange their positions, Ramesh becomes 15th from the left.
Understanding the problem:
We need to determine the new position of Suman from the right after Ramesh and Suman interchange their positions.
Solution:
Let's assume the total number of students in the row is 'n'.
Step 1: Determine Ramesh's initial position from the right
Since Ramesh is 9th from the left, we can calculate his position from the right using the formula:
Position from right = Total students - Position from left + 1
So, Ramesh's initial position from the right = n - 9 + 1 = n - 8
Step 2: Determine Suman's initial position from the right
Since Suman is 6th from the right, his initial position from the right = 6
Step 3: Interchanging their positions
When Ramesh and Suman interchange their positions, Ramesh becomes 15th from the left. This means that Suman's initial position from the right becomes Ramesh's new position from the left.
Step 4: Determine Ramesh's new position from the left
Ramesh's new position from the left = 15
Step 5: Determine Suman's new position from the right
Since Suman's initial position from the right becomes Ramesh's new position from the left, we can calculate Suman's new position from the right using the formula:
New position from right = Total students - New position from left + 1
New position from right = n - 15 + 1 = n - 14
Step 6: Equating Ramesh's new position from the left and Suman's new position from the right
Since Ramesh's new position from the left is 15 and Suman's new position from the right is n - 14, we can equate them:
15 = n - 14
Step 7: Solve for n
n - 14 = 15
n = 15 + 14
n = 29
Step 8: Determine Suman's new position from the right
Using the value of n, we can calculate Suman's new position from the right:
Suman's new position from the right = 29 - 14 = 15
Therefore, Suman's new position from the right is 15. Hence, the correct answer is option 'A'.
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Community Answer
In a row of students, Ramesh is 9th from the left and Suman is 6th fro...
Position of Suman from right
= [ Difference of Ramesh 's position + First position of Suman }
= [(15 – 9) + 6] = 12th
= [ Difference of Ramesh 's position + First position of Suman }
= [(15 – 9) + 6] = 12th
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In a row of students, Ramesh is 9th from the left and Suman is 6th from the right. When they both interchange their positions then Ramesh will be 15th from the left. What will be the position of Suman from the right?a)12thb)13thc)15thd)6thCorrect answer is option 'A'. Can you explain this answer?
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