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4.5%=81
100%=?
Cross and multiply
81×100/4.5=1800 machines were analysed
Jonmhumble answered the question on October 28, 2017 at 08:36
50-35=15
%increase=increase/original number×100
15/35×100=42.86%
Jonmhumble answered the question on October 28, 2017 at 08:40
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