The mean temperature from 9th to the 16th of january , both days inclusive, was 11.6*c and from the 10th to the 17th was 12.2*c. the temperature on the 9th was 10.8*c. what was it on the 17th?
(a)15.6*c (b) 16.6*c (C)11.6*c (d) none

• (a) 15.6
  
  Total temp. from 9th to 16th(8 days)=8*11.6=92.8
  Total temp. from 10th to 16th=(Total temp. from 9th to 16th)- Temp. on 9th=92.8 -10.8=82
  Total temp. from 10th to 17th(8 days)=8*12.2=97.6,
  So temp. on 17th=(Total temp from 10th to 17th) -(Total temp. from 10th to 16th)=97.6-82=15.6
• 8 years agoHelpfull: Yes(3) No(0)
• The mean temp of 9 to 16 = 11.6
  So they are 8terms from 9 to 16 so 8*11.6=92.8
  Like wise for 10 to 17 is 8*12.2=97.6
  They given 9th term degree is 10.8 so we going to add all term 9th term + (10 to 17) is 10.8+97.6= 108.4
  Then subtract the value of 9th to 16th term to get 17th term is 108.4-92.8=15.6
• 5 years agoHelpfull: Yes(0) No(0)