Question

PLZ HELP...no direct answers!!

The average high temperature in July in Moscow is 23 degrees celsius.One day in July 2010,the temperature was 14.2 degrees higher than normal.Just 4 days later,a record high temperature of 39 degrees celsius was set.how much higher was the record temperature than the high temperature 4 days earlier?

Answer 1

I call the unknown temperature at first day with t0, so I can write this:
\[\Large \frac{{{t_0} + 14.2 + 39}}{4} = 23\]
the requested temperature difference, is given by the subsequent formula:
\[\Large {t_0} - 23 = ...?\]