A car dealer has 22 vehicles on his lot. If 8 of vehicles are vans and 6 of the vehicles are red, 10 vehicles are neither red nor vans. How many vans are red.

It tells me to make a Venn diagram. The answer to the question is 2. How did they get two? I do not think that I have enough information inorder to solve the problem or am I overthinking the problem? Any help would be great thanks.