math
posted by jill on .
A basket with 12 apples has mass of 3105 grams. The same basket w 7 apples has a mass of 1980 grams. Each apple has same mass. What is mass of the basket

b + 12a = 3105
b + 7a = 1980
5a = 1125
a = 225
b = 405 
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