SOLUTION: 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 t

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Question 210396This question is from textbook Longman mathematics for IGCSE book 1
: 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
Small tin=142 small tin=7
Please solve my question. It is really urgent. I hope someone would solve it.Thankyou very much indeed. This question is from textbook Longman mathematics for IGCSE book 1

Found 2 solutions by Earlsdon, stanbon:
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
To find the number of grams per penny, just divide the number of grams by the number of pennies.
For the large tin:
794%2F28.5+=+highlight%2827.8596%29grams per penny.
For the small tin:
142%2F7+=+highlight%2820.2857%29grams per penny.
The difference in price is:
27.8596-20.2857+=+7.5739grams per penny.
The cost of the large tin is less, per penny, than the cost of the small tin by 27.19%.
%287.5739%2F27.8596%29+=+27.19%

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
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.