alleryएका चाचणीत 70 (भार 1) आणि 85 (भार 2) गुण आहेत. भारित मध्य (weighted mean) किती आहे?
A78
B82
C80
D77.5
Answer & Solution
Correct answer: C. 80
भारित एकूण बेरीज 70 + 170 = 240 आहे, आणि 240 ला 3 ने भागल्यास 80 येते.
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