A coin collection has 150 pennies and 350 nickels. If 40% of the penni

Question

A coin collection has 150 pennies and 350 nickels. If 40% of the pennies and 60% of the nickels were minted prior to 1982, what percent of all the coins in the collection were minted prior to 1982?

(A) 51%
(B) 52%
(C) 53%
(D) 54%
(E) 55%

Saiharish98 · Answer

150(0.4) +350(0.6)= 270_no.of coins before 1982
Total coins 500
So percentage=(270/500) *100=54%
Answer---D

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Abhishek009 · Answer

\frac{40}{100} * 150 + \frac{60}{100} *350/(350 + 150)*100

=  \frac{60 + 210 }{500}*100

=  \frac{270 }{500}*100

= 54% , Answer must be (D)

ScottTargetTestPrep · Answer

Solution:
 
The number of pennies that were minted prior to 1982 is 150 x 0.4 = 60. The number of nickels that were minted prior to 1982 is 350 x 0.6 = 210, Therefore, the number of coins that were minted prior to 1982 is:

x 100 = (270/500) x 100 = 270/5 = 54 percent of the total number of coins.

Answer: D

neetib · Answer

The number of pennies that were minted prior to 1982 = 150 x 0.4 => 60 
The number of nickels that were minted prior to 1982 = 350 x 0.6 => 210 
Total = 60+210 =270
%age = (270/500)*100=54%

A coin collection has 150 pennies and 350 nickels. If 40% of the penni

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A coin collection has 150 pennies and 350 nickels. If 40% of the penni

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