The average of three brother is 15 years. If the age of two brother is 15 and 12 years,find the age of the third brother
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Let Y be the age of the 3rd brother.
[15 +12+ Y] / 3= 15
=> Y = 45-27= 18
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Hello.. ☺
♪＼(*＾▽＾*)／＼(*＾▽＾*)／
Age of two brothers
= 15 yrs. and 12 yrs.
total age of three brother =
average * 3. = 15 * 3 = 45
Age of the third brother
= 45 - (15 + 12)
= 45 - 27 = 18
Age of the third brother is 18
thank you ☺
♪＼(*＾▽＾*)／＼(*＾▽＾*)／
Age of two brothers
= 15 yrs. and 12 yrs.
total age of three brother =
average * 3. = 15 * 3 = 45
Age of the third brother
= 45 - (15 + 12)
= 45 - 27 = 18
Age of the third brother is 18
thank you ☺
NidhraNair:
thanks ☺
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