A) 59 kg |
B) 65 kg |
C) 69 kg |
D) 67 kg |
D) 67 kg |
Here, \( \Large n_{1}=19, a_{1}=74, n_{2}=38, a_{2}=63 \)
Total average weight = \( \Large \frac{n_{1}a_{1} + n_{2}a_{2}}{n_{1} +n_{2}} \)
= \( \Large \frac{ \left(19\right) \left(74\right) + \left(38\right) \left(63\right)}{19+38} = \frac{3800}{57} = 67 kg \)