About 30% of the students at Randolph Middle School ride the bus. If there are 640 students enrolled at the school, which is closest to the number of students who ride the bus?​

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step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!