Jonothan class has 30 boys. of the students in his class 60% are girls. how many girls are there

Answer: 18 Girls

You have to solve for 60% of 30. Here's a tip, when diving the whole number by 10, the answer you get is 10% of the whole number. For example, 10% of 30 would be 3. So now multiply the 3 (10%) by 6 to get 60%