A bag is filled with pennies and nickels in the ratio of 10 to 5. There are 60 nickles in the bag, how many coins are there in that bag?
Choose the correct choice
A) 40
B) 180
C) 65
D) 70
E) 80
A ratio of pennies to nickels of10 to 5 means that we can write the number of pennies and nickels in the form   number of pennies = 10x and number of nickels = 5x   But we know the number of nickels, 60. Hence   5x = 60   Solve for x   x = 12   The total number of coins is given by   10x + 5x = 15x  10  + 5= 
<gadget id="calculator"> 10  + 5</gadget>
<output>15</output>
15x= 15 × 12 = 180   Answer : 180
<result>B</result>
A bag is filled with pennies and nickels in the ratio of 10 to 5. There are 60 nickles in the bag, how many coins are there in that bag?