John has taken four (4) tests that have an average of 84. In order to bring his course grade up to a ‘B’, he will need to have a final average of 87. What will he need to average on his final two tests to achieve this grade? Pick.
A) 87 B) 93 C) 92 D) 94 E) 97
Traditional Method:   Total scored till now 84*4=328   Total score to avg 87 in 6 tests = 87*6= 
<gadget id="calculator">87*6</gadget>
<output>522</output>
522   Total to be scored on 2 tests= 522-336= 
<gadget id="calculator">522-336</gadget>
<output>186</output>
186   Avg on 2 tests= 186/2= 
<gadget id="calculator">186/2</gadget>
<output>93</output>
93   Answer: 93
<result>B</result>
John has taken four (4) tests that have an average of 84. In order to bring his course grade up to a ‘B’, he will need to have a final average of 87. What will he need to average on his final two tests to achieve this grade?