<PRE><B>Question 565902</B>
in 2 min a belt moves 300 lbs. a smaller belt moves the same amount the same distance in 6 mins. if both belts r used how long will it take to move the cans?
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1st belt rate: 1/2 job/min
2nd belt rate: 1/6 job/min
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Together rate: 1/x job/min
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Equation:
rate + rate = together rate
1/2 + 1/6 = 1/x
3x + x = 6
4x = 6
x = 1.5 min (time for the two belts together to move 300 lbs.)
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Cheers,
Stan H.</PRE>