Unknown number 10

The number first increased by 30%, then by 1/5. What percentage we've increased the original number?

Final Answer:

p =  56 %

Step-by-step explanation:

r1=100%+30%=1+10030=1.3 r2=1+1/5=56=1.2  r=r1 r2=1.3 1.2=2539=1.56  b = a   r  p = 100   aba p = 100   aa ra p = 100   1r1 p=100 (r1)=100 (1.561)=56%



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