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Out of 30 teachers of a school, a teache...

Out of 30 teachers of a school, a teacher of age 60 years retired. In his place another teacher of age 30 years was appointed. As a result, the mean age of the teachers will.
एक स्कूल के 30 शिक्षकों में से 60 वर्ष की आयु का एक शिक्षक सेवानिवृत्त हो गया। उसके स्थान पर 30 वर्ष की आयु के एक अन्य शिक्षक को नियुक्त किया गया। परिणामस्वरूप, शिक्षकों की माध्य आयु

A

Reduced by 6 months

B

Reduced by 1 yr

C

Same as

D

Reduced by 2 yr

Text Solution

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The correct Answer is:
B
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ARIHANT PUBLICATION BIHAR-MODEL SOLVED PAPER 2019-SECTION III MATHEMATICS
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