Systems of Linear Equations and Inequalities >> Solving Systems of Equations by Substitution

Question

Pyrotechnician plans for two fireworks to explode together at the same height in the air. They travel at speeds shown below. Firework B is launched 0.25 s before Firework A. How many seconds after Firework B launches will both fireworks​ explode?

firework a = 340

firework b = 320

Both fireworks will explode [enter your response here] seconds after Firework B launches.

Answer 1

Solve for 320*(.25+t) = 340*t where t is the time in seconds after b launches. By rearranging the variables, the value of t=4 seconds.