In a row of boys Bhanu is 21st from the left and Viru is 19th from the right. When they interchange positions, Viru becomes 30th from the right. What is the new position of Bhanu from the left?
Explanation:
Initially Bhanu was 21st from the left. After interchanging position same position (occupied by Viru now) is 30th from the right.
∴ Total number of students = 21 + 30 – 1 = 50.
After exchange Bhanu occpies 19th position from right.
∴ New position of Bhanu from left = 50 – 19 + 1 = 32nd.
Alternately, Viru was originally 19th from the right and then became 30th from the right.
∴ Viru moved left by 11 places.
∴ Bhanu also should have moved right by 11 places.
Therefore, Bhanu’s position from the left after the interchange = 21 + 11 = 32nd.
Hence, option (a).
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