Four tenths.
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GCF(84, 4) = 1.Therefore, 84/4 = 21.
% increase = 66.67% % increase =|original value - new value|/original value * 100% = |84- 140|/84 * 100% = 56/84 * 100% = 2/3* 100% = 66.67%
21
It is: 4*84 = 336
The answer is; 54.6 But I used my TI-84 to get that answer and I can not remember how to do these.