Using the following triangle, what is the cotangent of angle B?

1.) cotB = c/b
2.) cotB = a/c
3.)cotB = b/a
4.) cotB = a/b

Afamily has two cars. the first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. during one particular week, the two cars went a combined total of 1025 miles, for a total gas consumption of 55 gallons. how many gallons were consumed by each of the two cars that week?