Lilla read 1/5 of her book last week. This week she read 3 times as much as she read last week. Write an expression to show how much of the book Lilla has left to read. Then simply the expression.

There are 40 girls and 32 boys who want to participate in 6th grade intramurals. if each team must have the same number of girls and the same number of boys, what is the greatest number of teams that can participate in intramurals? how many girls and boys will be on each team?