Unknown number 10

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

Correct answer:

p =  56 %

Step-by-step explanation:

b=a(1+30/100) (1+1/5)=0  p = 100   aba p = 100   aa(1 + 30/100) (1 + 1/5)a p = 100   1(1 + 30/100) (1 + 1/5)1 p=100 ((1+30/100) (1+1/5)1)=56%



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