I have this question that I kind of know how to solve, but I don't understand the concepts of it. Like- I know where to plug in the numbers and how to create the equations to solve but I don't get the why part. If someone could help me with this, it'd be much appreciated. Okay, here it is-
"A 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?"
The equation is supposed to be 360x - 90 = 280x.

Question

I have this question that I kind of know how to solve, but I don't understand the concepts of it. Like- I know where to plug in the numbers and how to create the equations to solve but I don't get the why part. If someone could help me with this, it'd be much appreciated. Okay, here it is-
"A 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?"
The equation is supposed to be 360x - 90 = 280x.

anonymous · Answer

Here's a screenshot of the question-