11 क्रिकेट खिलाड़ियों की औसत आयु 20 वर्ष है । यदि कोच की आयु भी सम्मीलित कर ली जाए तो औसत आयु 10% बढ़ जाती है । कोच की आयु ज्ञात कीजिये ?

Options

A. 48 years
B. 44 years
C. 40 years
D. 36 years

Answer

B

Explanation

According to the question
Average age of eleven cricket players is 20 years total age of eleven cricket players is =20x11=220
If the age of coach included then the average age increased by 10% i.e. =`20+10/100xx20=22` years
Total age of eleven players and coach =22x14=264 year
`therefore` Age of coach =264-220 =44 years