Question

George has a collection of 36,000 pennies. Of these pennies, 25% are dated before 1980, 35% are dated from 1980 to 2000, and the rest are dated 2000. How many pennies in George's collection are dated after 2000?

a) 10,800
b) 5,400
c) 9,000
d) 7,200

Answer 1

To find out how many pennies in George's collection are dated after 2000, subtract the percentages of pennies dated before 1980 and from 1980 to 2000 from 100%. George has 14,400 pennies that are dated after 2000.

Step-by-step explanation:

To find out how many pennies in George's collection are dated after 2000, we need to subtract the percentages of pennies dated before 1980 and from 1980 to 2000 from 100%. Let's calculate:

Number of pennies dated before 1980 = 25% of 36,000 = 9,000 pennies

Number of pennies dated from 1980 to 2000 = 35% of 36,000 = 12,600 pennies

Total number of pennies dated before 2000 = 9,000 + 12,600 = 21,600 pennies

Number of pennies dated after 2000 = 100% - 21,600 pennies = 14,400 pennies

So, George has 14,400 pennies that are dated after 2000.