Question

I'll just send a picture of the problem

Answer 1

we are told that 4 out of 10 students are taking a trip. To determine how many students will be taking a trip from a 150 students class we can use a simple rule of three, that is:

`\begin{gathered} 4\text{ trip}\rightarrow10\text{ students} \\ x\rightarrow150\text{ students} \end{gathered}`

Cross multiplying we get:

`x=150\text{ students(}\frac{4trip}{10\text{ students}})`

solving the operations:

`x=60\text{ trip}`

Therefore, 60 students are taking a trip.