if 5 boys take two hours to water the garden, then how long should 10 boys take to water the same type of garden?  Select.
A) 80 min	B) 50 min	C) 30 min	D) 65 min	E) 60 min
if 5 boys take an hour to water the garden, then   10 boys will take  5*120/10= 
<gadget id="calculator"> 5*120/10</gadget>
<output>60</output>
60 mins to water the same type of garden.   ANSW60 minR:60 min
<result>E</result>
if 5 boys take two hours to water the garden, then how long should 10 boys take to water the same type of garden?