A bag is filled with pennies and nickels in the ratio of 5 to 3. There are 30 nickles in the bag, how many coins are there in that bag? Options.
A) 40  B) 50  C) 65  D) 70  E) 80
A ratio of pennies to nickels of 5 to 3 means that we can write the number of pennies and nickels in the form   number of pennies = 5x and number of nickels = 3x   But we know the number of nickels, 30. Hence   3x = 30   Solve for x   x = 10   The total number of coins is given by   5x + 3x = 8x  5  + 3= 
<gadget id="calculator"> 5  + 3</gadget>
<output>8</output>
8x= 8 × 10 = 80   80
<result>E</result>
A bag is filled with pennies and nickels in the ratio of 5 to 3. There are 30 nickles in the bag, how many coins are there in that bag?