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Seventh grade math 100%.
Xiaohong lost 40*3%*3.4=4.08(KG) on the 340kmd Tiangong-1. Xiaohong weighed 40-4.08=35.92(KG) and Xiaoming weighed 35.92+8.98=44.9(KG) on the 340kmd Tiangong-1.
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