Whats the Answer Giving Brainliest:D

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

Will give brainliest summations with algebraic expressions image shown

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.