The dirtbikes cost 3 * 150 = $450. The off - road vehicles cost 300 * 4 = $1200. He had to register 3 + 4 = 7 vehicles. That means registration cost 25 * 7 = $175. So the total cost of everything was 450 + 1200 + 175 = $1825.
This justifies what answer for what question? Q & A:
James buys 3 dirt bikes for $150 each and 4 off-road vehicles for $300 each. It also cost him $25 to register each of these. How much did he pay for everything?
1825