Question

The mean temperature of Tuesday to Thursday was 27 ${}^{\circ }$C and of Wednesday to Friday was 24 ${}^{\circ }$C. If the temperature on Friday was 2/3${}^{rd}$ of the temperature on Tuesday, what was the temperature on Friday (in ${}^{\circ }$C)?

• A. 20
• B. 19
• C. 16
• D. 17
• E. 18

Answer 1

The correct option is E

18

Tue + Wed + Thu = 81

Wed + Thu + Fri = 72

hence Tue - Fri = 9

Also Fri = (2 /3) x Tue => Tue = 27 ${}^{\circ }$C

So the temperature on Friday = 18 ${}^{\circ }$C.