Question 210396
For both sizes of tin for this year calculate the number of grams per penny correct to 4 significant figures. Analyse your answer using percentages. Comment on your result. This table shows contents (in g) and price (in p) for two sizes of tins of baked beans in the UK. 
1976 mass (g) 1976 cost (p)
Large tin=794 large tin=28.5
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grams per penny = 794/28,5 = 27.86 grams per penny
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Small tin=142 small tin=7
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grams per penny = 142/7 = 20.29 grams per penny
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The quantitative difference in these prices is 27.86-20.29 = 7.574 
The percentage difference is 7.574/20.29 = 0.3733 = 37.33%
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Cheers,
Stan H.