Rubin has 6 rolls of pennies containing 50 coins each, 5 rolls of nickels
containing 40 coins each, 4 rolls of dimes containing 50 coins each, and 3
rolls of quarters containing 40 coins each. How much money does he have?
A. $68.40
B. $17.50
C. $63.00
D. $8.20

Respuesta :

Answer:

C. $63.00

Step-by-step explanation:

[tex](6*50*0.01)+(5*40*0.05)+(4*50*0.10)+(3*40*0.25)=\\(300*0.01)+(200*0.05)+(200*0.10)+(120*0.25)=\\3+10+20+30=\\13+20+30=\\33+30=\\63[/tex]

He has C. $63.00.

After conversion of all units to single unit , total money with Rubin is equals to $63.00.

What is conversion?

"Conversion is defined as the the process of changing one unit / form to another unit / form. For conversion standard scales are available."

According to the question,

Total pennies with Rubin = 6 × 50 pennies

Total nickels with Rubin = 5 × 40 nickels

Total dimes with Rubin = 4 × 50 dimes

Total quarter with Rubin = 3 × 40 quarters

Conversion of units

1penny = 0.01dollars

1nickel= 0.05 dollars

1 dime = 0.1 dollars

1 quarter = 0.25 dollars

Therefore,

Total money with Rubin after conversion into dollars we get ,

= (6 × 50 ×0.01) + ( 5 × 40 × 0.05) + (4 × 50 × 0.1) + ( 3 × 40 ×0.25)

= 3 + 10 + 20 + 30

= $63.00

Hence, Option(C) is the correct answer.

Learn more about conversion here

https://brainly.com/question/3477680

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