pushpitkc wrote:
If it is assumed that each of the n production workers in a factory assembles one instrument every
t minutes, how many instruments does the factory assemble in 7.5 hours of production?
A. \(\frac{450n}{t}\)
B. \(\frac{450t}{n}\)
C. \(450nt\)
D. \(\frac{7.5tn}{60}\)
E. \(\frac{7.5n}{60t}\)
One worker assembles 1 instrument in t minutes.
One worker assembles 60/t instruments in one hour. ( Unitary method or if you put t = 60 mins it comes to 1 instrument per hour)
One worker assembles 60/t * 7.5 instruments in given time.
One worker assembles 450 / t instruments then n workers would n times that or 450n/t instruments.
Hence Option (A) is our choice.
Best,
Gladi
_________________
Regards,
Gladi
“Do. Or do not. There is no try.” - Yoda (The Empire Strikes Back)
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63% (01:42) correct 
