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Question

Q. The average age of 40 students in a class is 18 years. What will be the new average age if we include the age of 10 faculties whose average age is 33 years?

Q. एक कक्षा में 40 छात्रों की औसत आयु 18 वर्ष है। यदि हम इसमें 10 शिक्षकों की औसत आयु 33 वर्ष जोड़ देते हैं तो नई औसत आयु क्या होगी?

A

17
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B

19
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C

21
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D

23
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Solution

The correct option is C
21
New Average = (40×18)+(10×33)40+10=21

नया औसत = (40×18)+(10×33)40+10=21

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