Same expenses

If the price of tea increases by 20%, what percent must the consumption be reduced to keep the expense the same?

Correct answer:

p2 =  16.6667 %

Step-by-step explanation:

r1=100%+20%=1+10020=1.2  r=1 r1 r2 = 1  r2=1/r1=1/1.2=650.8333  r2 = (1p2/100)  p2=100 (1r2)=100 (10.8333)=16.6667%



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