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Alecsey [184]
3 years ago
9

HELP!!!

Mathematics
1 answer:
yulyashka [42]3 years ago
6 0
0.40x + 55 = 0.15x + 80
0.40x - 0.15x = 80 - 55
0.25x = 25
x = 25 / 0.25
x = 100 minutes <=
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