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Last week, you finished Level 2 of a video game in 32 minutes. Today, you finished Level 2 in 28 minutes. What is your percent of change?

1 Answer

sankarankalyanam

Mar 20, 2018

#color(indigo)("Percentage Change " P = 12.5% " reduction"#

Explanation:

#"Time taken to finish Level 1 " T_1 = 32 min#

#"Time taken to finish Level 2 " T_2 = 28 min#

#" Percentage change " P = ((T_2 - T_1) / T_1) * 100#

#=> ((28 - 32) / 32) * 100 = -(cancel4 * 100) / cancel(32)^color(red)(8) #

# => -100 / 8 = - 12.5%#

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