Question

1. A survey of 25 high school students showed that 12 drove cars and 13 drove trucks. Based on the survey, if 375 students drive, how many operate a truck?

Answer 1

12 out of 25 drive cars

13 out of 25 drive trucks

We can use the rule of three:

If 12 students out of 25 drive cars then X students our of 375 drive cars:

`(12)/(25)=(x)/(375)\Longrightarrow x\text{ = }(12\cdot375)/(25)=(4500)/(25)=\text{ 180}`

For the number of students that drive trucks:

If 13 students out of 25 drive cars then X students our of 375 drive cars:

`(13)/(25)=(x)/(375)\Longrightarrow x=(13\cdot375)/(25)=(4875)/(25)=195`

Answer:

195 students drive truck