Ivan,  who is 1.72 m tall, wishes to find the height of a tr…

Ivan,  who is 1.72 m tall, wishes to find the height of a tree.  He walks 22.47 m from the base of the tree along the shadow of the tree until his head is in a position where the tip of his shadow exactly overlaps the end of the tree top’s shadow.  He is now 5.03 m from the end of the shadows.  How tall is the tree?  Round to the nearest hundredth.  

A survey of 215 tourists were taken.  The survey indicated t…

A survey of 215 tourists were taken.  The survey indicated the following: 105 of the tourists planned to visit Disney 115 plan to visit Universal Studios 63 plan to visit Busch Gardens 46 plan to visit Disney and Universal 37 plan to visit Universal and Busch Gardens 29 plan to visit Disney and Busch Gardens 20 plan to visit all three destinations How many tourists plan to visit none of the three destinations?