math
posted by jeanna .
The Christmas Tree Store has a parking lot that will hold l,000 vehicles. 2/5 of the spaces are for cars. When you went to buy your tree, there were 200 cars and some trucks in the parking lot. The parking lot was 3/4 full. How many trucks were in it?

400 car spaces and 600 truck spaces
200 cars + x trucks = 750
x = 550 trucks