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two weeks john's corn plants measured 5in. tall.Now they are 2ft. 3in . tall. What percent of increase?

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two-liter bottles of cola were selling for the same price as a six-pack of cola. Each can holds 354 milliliters. Which is the better buy ?

2ft, 3in = 27 in.
% = (27/5) * 100% = 540.
% Increase = 540% - 100% = 440%.

Alternate Method:
% Increase = (27/5-1)*100% = 440.

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