Factory A can produce 45 machines in 20 minutes. Factory B can produce 30 machines in 15 minutes. If both factories produce machines for 2 hours, wich factory will produce more machines? How many machines will be produced?

Divide amount a minute by minutes so Factory A = 2.25 Factory B = 2 then multiply those by 2hrs or 120 minutes so

Factory A = 270 and Factory B = 240

factory A produced more machines

45machines:20mins

20mins=1/3hour

45machines:1/3hour

times 3

135machins=1hour

135machines per hour

B. 30 in 15

15=1/4 hour

30=1/4hour

times 4

120machines per hour

both produce for 2 hours

A. is 135*number of hours, B is 120 times number of hours

135*2+120*2=

270+240=

510

make 510 machines in 2 hours