A dance festival takes place over three days for a total time of 35 hours. If each dance group has 10 minutes to perform, how many dance groups can perform at the festival?

OK so there is a total of thirty five hours so multiply thirty five by sixty since there is sixty minutes in one hour which once thirty five and sixty are multiplied it is two thousand one hundred so you divide by ten because each performance took ten minutes and the hours were already turned into minutes so after dividing you her two hundred ten.