A family has two cars. The first car has a fuel efficiency of \( 15 \) miles per gallon of gas and the second has a fuel efficiency of \( 30 \) miles per gallon of gas. During one particular week, the two cars went a combined total of \( 1200 \) miles, for a total gas consumption of \( 55 \) gallons. How many gallons were consumed by each of the two cars that week? First car: \( \square \) gallons Second car: \( \square \) gallons
Pregunta
Answer
first car = 30 gallons
second car = 25 gallons
Related Questions
Q:
Find the solution of the exponential equation \( 16 e ^ { x } = 12 \) in terms of logarithms, or correct to four decimal places. \( x = \)
Q:
Certain radioactive material decays in such a way that the mass remaining after \( t \) years is given by the function
\( m ( t ) = 100 e ^ { - 0.01 t } \)
where \( m ( t ) \) is measured in grams. (a) Find the mass at time \( t = 0 \) . Your answer is (b) How much of the mass remains after \( 20 \) years? Your answer is Round answers to \( 1 \) decimal place.