Problema Solution
A parking lot has 81 cars in it. All of them are Acura, Beetle, and Camry. There are half as many Acura's as Beetles and the number of Camry's is 80% of the number of Acura's and Beetles together. How many of each kind of car is in the parking lot?
Answer provided by our tutors
Let
a = the number of Acura cars
b = the number of Beetle cars
C = the number of Camry cars
The total number of cars is 81:
a + b + c = 81
Using the info given in the problem we can write the following equations:
a = b/2
c = 0.80(a + b)
We have the following system of equations that we need to solve:
a + b + c = 81
a = b/2
c = 0.80(a + b)
........
click here to see the system of equations solved for a, b and c
........
a = 15 Acura cars
b = 30 Beetle cars
c = 36 Camry cars
There are 15 Acura, 30 Beetle and 36 Camry cars in the parking lot.