1/13 Exercise 13.22 Jaa Sulje Kirjaudu sisään lähettääksesi tämän lomakkeen The dance group initially had [[$ 12 $]] dancers. By what percentage did the number of dancers increase or decrease, when the number of dancers a) first increased by [[$ 100 \% $]] and then decreased by [[$ 25 \% $]]? The amount of dancers increased decreased by [[$ \% $]] b) first increased by [[$ 50 \% $]] and then decreased by [[$ 50 \% $]]? The amount of dancers increased decreased by [[$ \% $]] c) first increased by [[$ 200 \% $]] and then decreased by [[$ 75 \% $]]? The amount of dancers increased decreased by [[$ \% $]] Kirjaudu sisään lähettääksesi tämän lomakkeen