kristenaldrich
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The production line where you work can assemble 5 amplifiers every 30 minutes. At this rate, which correctly calculates the number of hours it takes to assemble 230 amplifiers?
A) divide 230 by 30 and then multiply by 5
B) divide 230 by 30 and then multiply by 2
C) divide 230 by 5 and then multiply by 2
D) divide 230 by 5 and then multiply by 0.5

Respuesta :

frika
If the production line where you work can assemble 5 amplifiers every 30 minutes, then 1 amplifier can be assembled in [tex] \frac{30}{5} =6[/tex] minutes.

To assemble 230 amplifiers you need [tex]230\cdot 6=1380[/tex] minutes that is 23 hours.

Then the correct choice is D, because [tex] \frac{230}{5} \cdot 0.5=23[/tex].

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