First, find what is 40% of the original price equal to:
[tex]0.4\times100=40[/tex]Substract $40 from the original price:
[tex]100-40=60[/tex]Calculate 10% of the new price of $60:
[tex]0.1\times60=6[/tex]Add $6 to the price of $60:
[tex]60+6=66[/tex]The total cost of the crystal vase is $66.