Mathematics, 12.11.2020 22:50, kellylopez7829

1,200 pennies of my collection,25% of these pennies are dated before 1980. 35% are dated from 1980 to 2000 and the rest are dated after 2000.how many pennies in my collection are dated before 2000

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1,200 pennies of my collection,25% of these pennies are dated before 1980. 35% are dated from 1980 t...