Question

quanto e 30% de 300

quanto e 10% de 80% de 10.000

Answer 1

30% de 300= 30x300/100= 90
80% de 10.000= 8.000
10% de 8.000= 800.

Answer 2

Olá.

$\mathsf{30\%~de~300=300\cdot\dfrac{30}{100}=}\\\\\mathsf{\dfrac{9.000}{100}=}\\\\\boxed{\mathsf{90}}\\\\\\\\\mathsf{80\%~de~10.000=10.000\cdot\dfrac{80}{100}}\\\\\mathsf{\dfrac{800.000}{100}}\\\\\boxed{\mathsf{8.000}}\\\\\\\\ \mathsf{10\%~de~8.000=8.000\cdot\dfrac{10}{100}}\\\\\mathsf{\dfrac{80.000}{100}}\\\\\boxed{\mathsf{800}}$

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