The average (arithmetic mean) of 4 different integers is 70. If the largest integer is 90, what is the least possible value of the smallest integer?  Choices:
A) 1 B) 19 C) 29 D) 13 E) 33
Total of Integers=70*4= 
<gadget id="calculator">70*4</gadget>
<output>280</output>
280   Lowest of the least possible integer is when the middle 2 intergers are at the maximum or equal to the highest possible integer.   But all integers are distinct. So if the largest integer is 90, then the middle 2 will be 88 and 89   Lowest of least possible integer= 280-(90+89+88)=280-267= 
<gadget id="calculator">280-267</gadget>
<output>13</output>
13   Answer: 13
<result>D</result>
The average (arithmetic mean) of 4 different integers is 70. If the largest integer is 90, what is the least possible value of the smallest integer?