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Factor them. 3 x 5 x 5 x 5 = 375 3 x 139 = 417 Select the common factors. The GCF is 3. Combine the factors, eliminating duplicates. 3 x 5 x 5 x 5 x 139 = 52125, the LCM
27.8
2 x 2 x 2 x 139
Let the highest score be x:- So: x+(x-3)+(x-8) = 139 => 3x = 150 and x = 50 Their scores respectively: 50, 47 and 42 ChecK: 50+47+42 = 139
139 x (1 - 30/100) = 139 x 0.7 = 97.3