Claire has 3 books. She averages the amount of pages of each book to have 305 pages. If her mom buys her a new book which has 400 pages, what will the new average be?  Select:  A) 342.5  B) 328.75  C) 330.87  D) 342.75  E) 335
(sum of the pages of the 3 books)/3 = 305   sum of the pages of the 3 books = 915   new sum = 915+400= 
<gadget id="calculator">915+400</gadget>
<output>1_315</output>
1315   new average= 1315/4= 
<gadget id="calculator">1315/4</gadget>
<output>1_315/4 = around 328.75</output>
328.75   ans: 328.75
<result>B</result>
Claire has 3 books. She averages the amount of pages of each book to have 305 pages. If her mom buys her a new book which has 400 pages, what will the new average be?