Thursday

April 17, 2014

April 17, 2014

Posted by **dan** on Thursday, October 1, 2009 at 8:40pm.

i did

200x+300x = 7200

500x=7200

x=14.4mins?

- math -
**Reiny**, Thursday, October 1, 2009 at 9:22pmrate of newer machine =7200/200 can/min

= 36 cans/min

rate of older machine = 7200/300 cans/min

= 24 cans/min

so combined rate = 36+24 = 60 cans/min

so time for combined work = 7200/60 = 120 minutes.

**Related Questions**

math - jenny's company has two photocopying machines, one of which is older and ...

MATH - A company makes three products X, Y and Z. Each product requires ...

MATH- please help! - A company makes three products X, Y and Z. Each product ...

MATH-PLEASE HELPPP!!!! - A company makes three products X, Y and Z. Each product...

math- im really confused! please help!! - A company makes three products X, Y ...

Math - A factory has 3 machines that produce the same item. Machines 1 and 2 ...

math - In 2 minutes, a conveyor belt moves 300 pounds of recyclable aluminum ...

statistics - A machine produces 49 titanium bolts every 2 hours. At this rate ...

math - a person can copy the final exam in 28 minutes using a new copy machine. ...

Fractions / math - Okay, for these two questions I have the answers - but I can'...