Last year, Ms. Henderson had 49 students in her Pre-Algebra classes. This year she has 17. What is the percent decrease in the amount of students she has this year? (Round your answer to the
nearest whole percent)

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.

whats the rest of it?

93-8=85

855=17

17*4=68

there are 68 purple marbles in that bag