at a mexican restaurant you order a taco for 1.50 and burrito dinner for 6.75.sales tax is 10 percent and you leave a tip 15% what is your total bill including tip and tax

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?