Question

6th grade math , help me please :)

Answer 1

Answer:

1. 30%
2. 30%

Step-by-step explanation:

$7\:out\:of\:ten\\10-7 = 3\\3\:people\:don't\:brush\\\\\frac{3}{10} \times 100\\\\\frac{300}{10} \\\\=30\%$

$\frac{18}{60} \times 100\\ \\\frac{1800}{60} \\\\= 30\%$