A certain meter records voltage between 0 and 10 volts inclusive. If the average value of 3 recordings on the meter was 9 volts, what was the smallest possible recording in volts?
Choose the correct choice:  A) 2  B) 3  C) 4  D) 5  E) 7
if average of 3 is 9 so sum of 3 should be 27   3 recording can be from 0-10 inclusive   to find one smallest other two should be highest   so, lets assume three var are a,b,c   say a is smallest and give b and c greatest readings say 10 and 10   so a has to be 7   7
<result>E</result>
A certain meter records voltage between 0 and 10 volts inclusive. If the average value of 3 recordings on the meter was 9 volts, what was the smallest possible recording in volts?