i need help in math

Question

Find the amount of increase and the percent increase if the original amount is 270 and the new amount is 351.

Answer 1

amount of change
------------------------- = percent of increase or decrease
original amount

81
------ = percent of increase 
270 

.3 = percent of increase {divided}

= 30% {changed .3 to a percent by moving decimal point right two places}

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