Problem Solving (PS) | Soe's income is 20% more than Joe's income, and Joe's income is 25% of

What is the question source?

Substitute in a value

Kim=100
Joe = K(75/100), 100(75/100)=75
Soe=J(6/5)=75(6/5)=90

Percentage change = original-new/original · 100/1
(100-90)/100 ·100/1=10%

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