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Mathematics, 16.09.2019 23:00 ennasawesome

From 1980 to 1990 the national debt of country 'w' increased by 80%. from 1990 to 2000 the national debt of country 'w' increased by 50%. in 2000 the national debt of country 'w' was what percent larger than in 1980?
a) 130%
b) 140%
c) 16 2/3%
d) 170%

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