average age of 7 boys is 20 years. If average age of the first six boys is 19.5 years then the 7th boy will be how many year old?
Answers
Answered by
3
The seventh boy will be :
20 × 7 - 6 × 19.5
=> 140 - 117.0 = 23 Years ✔✔
Answered by
2
Answer:
23 years
Step-by-step explanation:
20 x 7=140
19.5 x 6 =117
140-117=23
23 years
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