the average of 10 consecutive integers is 15. then, 9 is deducted from the first consecutive number, 8 is deducted from the second, 7 is deducted form the third, and so on until the last number which remains unchanged. what is the new average?
Choose the correct choice from the following answers:  A) 10  B) 10.5  C) 11  D) 11.5  E) 12
<gadget id="calculator">10 * 15</gadget>
<output>150</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 9</gadget>
<output>45</output>

<gadget id="calculator">150 - 45</gadget>
<output>105</output>

<gadget id="calculator">105 / 10</gadget>
<output>21/2 = around 10.5</output>

<result>B</result>
the average of 10 consecutive integers is 15. then, 9 is deducted from the first consecutive number, 8 is deducted from the second, 7 is deducted form the third, and so on until the last number which remains unchanged. what is the new average?
divide(subtract(multiply(10, 15), multiply(add(const_4, const_1), 9)), 10)
"the total subtracted is ( 9 + 8 + . . . + 1 ) = ( 9 * 10 ) / 2 = 45 on average , each number will be reduced by 45 / 10 = 4.5 therefore , the overall average will be reduced by 4.5 the answer is b ."