A bag is filled with pennies and nickels in the ratio of 4 to 3. There are 45 nickles in the bag, how many coins are there in that bag?	Select the correct option:
A) 40 B) 105 C) 65 D) 70 E) 80
A ratio of pennies to nickels of 4 to 3 means that we can write the number of pennies and nickels in the form   number of pennies = 4x and number of nickels = 3x   But we know the number of nickels, 45. Hence   3x = 45   Solve for x   x = 15   The total number of coins is given by   4x + 3x = 4x = 7 × 15 = 105   Answer : 105
<result>B</result>
A bag is filled with pennies and nickels in the ratio of 4 to 3. There are 45 nickles in the bag, how many coins are there in that bag?