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Worker W produces n units in 5 hours.Workers V and W, work independently but at the same time produce n units in 2 hours. How long would it take V alone to produce n units?

Read Solution (Total 2)

given: W=5
WV/(W+V)=2
WV=2W+2V
5V=10+2V
3V=10
ANS: V=10/3
13 years agoHelpfull: Yes(16) No(4)

w produces n/5units/hr or 2n/5 in 2hrs. as v&w together produce n in 2hrs, v alone produces n-2n/5=3n/5 in 2hrs.so to produce n units,v takes 2*5/3=10/3hrs
13 years agoHelpfull: Yes(7) No(0)

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