500
The solution for the following word problem:
A very, very hungry guy goes to a fast food place and orders 3 burgers and 3 tacos, at a total cost of $7.50. Three days later, he is ready to eat again. This time, he buys 6 burgers and 1 taco, at a total cost of $10.00. Find the cost of one burger and the price of one taco.
What is $1.50 for one burger and $1.00 for one taco?