SOLUTION: A tin 10cm long, 7.5cm wide and 2cm deep holds 120g of rice when full. If 1kg of rice fills a tin 10cm square, find the height of this tin.

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Question 1205008: A tin 10cm long, 7.5cm wide and 2cm deep holds 120g of rice when full. If 1kg of rice fills a tin 10cm square, find the height of this tin.

Answer by ikleyn(52848) About Me  (Show Source):
You can put this solution on YOUR website!
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A tin 10cm long, 7.5cm wide and 2cm deep holds 120g of rice when full.
If 1kg of rice fills a tin 10cm square, find the height of this tin.
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The volume of the 1-st tin is  V%5B1%5D = 10*7.5*2 = 150 cm^3.


The volume of the 2-nd tin is  V%5B2%5D = 10*h cm^3;  the height "h" is unknown.


The proportion is

    V%5B1%5D%2FV%5B2%5D = 120%2F1000    <<<---===  volume%2Fvolume = grams%2Fgrams.

or

    150%2F%2810h%29 = 12%2F100.


From the proportion, find h

    h = %28150%2A100%29%2F%2810%2A12%29 = 125 cm.    ANSWER

Solved.