Altogether, I have 10 bags of sweets. The mean number of sweets in the bags is 42. The table shows how many sweets there are in 9 of the bags. Frequency Number of sweets in a bag 39,40,41,42,43 .How many sweets are in the 10th bag?
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Answer is 42. average per bag is 41, so total for all 10 bags= 410. total for 9 bags shown is 368, 10th bag = total for 10 bags minus total for 9 bags =42.
42
Total number of sweets 410
Totals in table 368
410 - 368 = 42
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