Two people can unload a lorry containing 200 boxes in 5 hours. (a) If four people are to unload the lorry instead of 2, how much time will be saved? (b) A larger lorry contains more boxes. If 6 people can unload it in 2 1/2 hours, how many boxes does it contain? Share with your friends Share 1 Shruti Tyagi answered this Dear student, 2 people can unload in 5 hours1 people can unload in 5×2 hours=10 hoursa) 4 people can unload in=104=52 =2.5 hours Time saved=Time taken by 2 people-Time taken by 4 people⇒Time saved=5-2.5=2.5 hoursb) as 4 people also taking 2.5 hours and 6 people also taking 2.5 hoursthe ratio of boxes unloaded will be same as ratio of number of peoplehence let 6 people unload x boxes in 2.5 hours⇒46=200x⇒x=50×6⇒x=300Hence 300 boxes will be unloaded Regards, 0 View Full Answer
