3). In an examination Eric got p marks. Steven got three times as many marks as Eric. Write down an expression for the
number of marks Steven gol.
b). Steven actually got 72 marks. Use this information to form an equation.
Solve this equation to find out the number of marks Eric got in his cram.

explanation:

step-by-step explanation:

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.