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Of the model cars manufactured in September,1/5 were models of NASCAR cars and 1/3 were world were 2 vintage models.how many cars manufactured in September were neither NASCAR model cars nor world war 2 vintage model cars



Answer :

Add 1/5 and 1/3. 1/3+1/5=
 First get common denominator( 15), So 5/15+3/15= 8/15
Then you calculate what is left over which is 7/15

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