A large jar and a small jar of coffee weigh 750 grams altogether. If 2 of the large jars and 3 of the small jars of coffee weigh 1750 grams altogether, how much does each kind weigh?
(Sol) If a small jar of coffee weighs X grams, then a large jar of coffee weighs ( 750 - X ) grams. If 2 large jars and 3 small jars of coffee weigh 1750 grams, then
Ans . [ A small jar : ( ) grams , A large jar : ( ) grams
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2007-08-14 9:38 pm
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2007-08-14 9:42 pm
✔ 最佳答案
A large jar and a small jar of coffee weigh 750 grams altogether. If 2 of the large jars and 3 of the small jars of coffee weigh 1750 grams altogether, how much does each kind weigh?(Sol) If a small jar of coffee weighs X grams, then a large jar of coffee weighs ( 750 - X ) grams. If 2 large jars and 3 small jars of coffee weigh 1750 grams, then
2 (750 -X) + 3X = 1750
1500 - 2X + 3X = 1750
X = 250
Small jar = 250 grams
Large jar = 750 - 250 = 500 grams
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