Question 446848
older machine x cans /hour
new machine  3x cans /hour
..
both working ---10,000 cans - 9 hours
1 hour 10000/9 = 1111 cans /hour

3x+x= 1111 ( rounded off)
4x=1111
x= 1111/4
x= 277 cans /hour 

new machine 3*277 = 831