Help me plsss giving out 16 points

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?