8. A jeweller purchases a gold bar of 1 kg. From the gold bar, he makes 10 small bars, weighing 12.5 g each; 12 necklaces, weighing 55.57 g each, and 24 pairs of earrings, weighing 5.6 g each. How much gold (in g) is left with him?
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Answer:
73.76 g is your answer
Total gold =1kg = 1000g
weight of one small bar = 12.5g
weight of 10 small bars = 10×12.5 = 125g
weight of 1 necklace = 55.57g
weight of 12 necklaces = 12×55.57 = 666.84g
weight of one pair of earrings = 5.6g
weight of 24 pairs of earrings = 24×5.6 = 926.24g
Total gold used =125+666.84+134.4 = 926.24g
Gold left = 1000-926.24 = 73.76g
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