ahw wendsday another riddle

There once was a boy he had to get to his tree house but could not get his bike, shovel, bucket and toy cars in there all at the same time.  He had a pulley that could pull it up but not all would fit on the pulley platform he has to get it all up there.  The bike covers the hole platform and the bucket covers 1/4 of the platform the shovel covers 1/2 of the platform the rope will only last three times up, by the way the cars are 2/3 of the platform how do you get it all up because...If the shovel and the car go up together the cars will fall how do you get it all up? Answer In the comments plz Thanks.  hint the bucket can hold in it half the amount of 2/3 Good luck.    the platform has twelve twethes of space think hard! ps this does not take you 2 mins more....