for a medal

Two workers assemble widgets at a factory. One worker is experienced, but the other worker is a novice. The experienced worker can assemble 67 widgets in eight hours. The novice can assemble seven widgets in two hours. If the experienced worker and the novice work together, how long will it take them to assemble 100 widgets? Assume that each worker has his own equipment and resources. One hour is the same as 60 minutes

Question

for a medal 

Two workers assemble widgets at a factory. One worker is experienced, but the other worker is a novice. The experienced worker can assemble 67 widgets in eight hours. The novice can assemble seven widgets in two hours. If the experienced worker and the novice work together, how long will it take them to assemble 100 widgets? Assume that each worker has his own equipment and resources. One hour is the same as 60 minutes

anonymous · Answer

A 7hours+30minutes 

B 10hours+20minuets 

c 9hours+15minutes

d. 8hours+25minutes

anonymous · Answer

@mathhelpplease12  @math&ing001  @phi

phi · Answer

Use  rate * time = amount of work

rate is measured in widgets per hour.  what is the rate of the fast worker?
what is the rate of the slow worker?

math&ing001 · Answer

The experienced worker can assemble 67 widgets per 8 hours aka    8.375 wph
The novice worker can assemble  7 widgets per 2 hours aka    3.5 wph
If they work together they will assemble 11.875 wph

So to assemble 100 widgets they'll need 100/11.875 hours...