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Russell had a collection of 1,200 pennies. Of these pennies, 25% are dated before 1980, 35% are dated from 1980 to 2000, and the rest are dated after 2000.
How many pennies in Russell's collection are dated after 2000?

A} 480
B} 720
C} 40
D} 60

PLEASE HELP!!! AND SHOW WORK!!!

Respuesta :

Answer:480 pennies dated after 2000

Step-by-step explanation:

1. Pennies dated before 1980 (x) - 25%,

All pennies (1,200) - 100%.

Then

2. Pennies dated from 1980 to 2000 (y) - 35%,

All pennies (1,200) - 100%.

Then

3. Rest pennies are dated after 2000, then

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