31. A business rents cars for $150 a day and vans for $300 a day. One day it rented a total of 30 vehicles and
made a total $5700. How many cars and vans did the business rent that day?
A 8 cars and 22 vans.
B 10 cars and 20 vans
C 20 cars and 10 vans
D 22 cars and 8 vans
![31 A business rents cars for 150 a day and vans for 300 a day One day it rented a total of 30 vehicles and made a total 5700 How many cars and vans did the busi class=](https://us-static.z-dn.net/files/d39/eae3690cd97a5952ab0fe9c6ac513c9c.png)