There were a total of 50 + 54 = <<50+54=104>>104 ice creams.

There were 50 x 3/5 = <<50*3/5=30>>30 chocolate-flavored ice creams sold.

There were 54 x 2/3 = <<54*2/3=36>>36 mango-flavored ice creams sold.

A total of 30 + 36 = <<30+36=66>>66 ice creams were sold.

So, 104 - 66 = <<104-66=38>>38 ice creams were not sold.

# Answer

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<|im_start|>system
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<|im_start|>user
An ice cream vendor has 50 chocolate-flavored ice creams and 54 mango-flavored ice creams in his cart. If he sold 3/5 of the chocolate-flavored ice creams and 2/3 of the mango-flavored ice creams, how many total ice creams were not sold?
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user
38
An ice cream vendor has 50 chocolate-flavored ice creams and 54 mango-flavored ice creams in his cart. If he sold 3/5 of the chocolate-flavored ice creams and 2/3 of the mango-flavored ice creams, how many total ice creams were not sold?
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