My maths watch question is in the attachment i am really stuck on this topic. Please can you help. Thanks
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Answers:
[tex]20.9\\34[/tex]
Working:
[tex]\frac{19+19+20+20+20+21+22+22+22+22+23}{11} =20.90909091[/tex]
[tex]\frac{19+19+20+20+20+21+22+22+22+22+23+x}{12}=22[/tex]
[tex]19+19+20+20+20+21+22+22+22+22+23+x=264\\230+x=264\\x=34[/tex]