John has taken four (4) tests that have an average of 80. 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?
Answers.
A) 87  B) 101  C) 92  D) 94  E) 97
87-80= 
<gadget id="calculator">87-80</gadget>
<output>7</output>
7*4= 
<gadget id="calculator">7*4</gadget>
<output>28</output>
28 points    2*87= 
<gadget id="calculator"> 2*87</gadget>
<output>174</output>
174   174+28= 
<gadget id="calculator">174+28</gadget>
<output>202</output>
202 points to be scored in the 2 tests.   Avg of 2 tests= 202/2= 
<gadget id="calculator">202/2</gadget>
<output>101</output>
101   Answer: 101   Traditional Method:   Total scored till now   80*4= 
<gadget id="calculator">  80*4</gadget>
<output>320</output>
320   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= 522-320= 
<gadget id="calculator">522-320</gadget>
<output>202</output>
202   Avg on 2 tests= 202/2= 
<gadget id="calculator">202/2</gadget>
<output>101</output>
101   Answer 101
<result>B</result>
John has taken four (4) tests that have an average of 80. 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?