Problema Solution
A car dealership has 378 cars on its lot. The ratio of new cars to used cars is 5:4.
Write and solve a system of equations to find the number of new and used cars
on the lot.
Answer provided by our tutors
let
x = the number of new cars
y = the number of user cars
A car dealership has 378 cars on its lot:
x + y = 378
The ratio of new cars to used cars is 5:4:
x : y = 5 : 4 cross-multiply
4x = 5y
by solving the system of equations:
x + y = 378
4x = 5y
we find:
x = 210 new cars
y = 168 used cars
click here to see the step by step solution of the system of equations:
there are 210 new cars and 168 used cars on the lot.