Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. ab is parallel to cd , and ef is perpendicular to ab. the number of 90° angles formed by the intersections of ef and the two parallel lines ab and cd is __

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?