And earthquake wave travels through 55 km of rock in 25 seconds. write a equation to represent the relationship between t ,the number of seconds, and d, the total distance the wave travels.

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?