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Final answer:Theorange weighs 110 grams and the pineapple weighs 770 grams.Explanation:To solve this problem, let's represent the weight of an orange as 'x' grams. Since the pineapple is 7 times as heavy as an orange, its weight can be represented as '7x' grams. We are also given that thepineapple weighs 870 grams more than the orange,so we can create the equation7x = x + 870.Solving this equation, we find that x = 110 grams. Therefore, the orange weighs 110 grams and the pineapple weighs7 * 110 = 770 grams.Learn more aboutWeight comparisonhere:brainly.com/question/26483814#SPJ11...