A machine needs 28.5 min to warmp up before producing toys. Once it has warmed up it can produce a toy in 9.25 min. How long will the machine take to produce 78 toys? Give your answer in hours.
To warm up the machine takes 28.5 minutes.
Once warmed up, the machine can produce a toy in 9.25 minutes.
To find the total time to produce 78 toys, we add the time to warm up with the time to produce the toys:
28.5 + (78 * 9.25) = 28.5 + 721.5 = 750 minutes.
To convert minutes to hours, we divide by 60:
750 / 60 = 12.5 hours.
Therefore, the machine will take 12.5 hours to produce 78 toys.