Monday

March 30, 2015

March 30, 2015

Posted by **Loren** on Tuesday, January 29, 2013 at 3:09pm.

- algebra -
**Reiny**, Tuesday, January 29, 2013 at 5:09pmAre we assuming something like

mix 2 L of water at 60° with 2 L of water at 80° we will have 4 L of water at 70° ?

Perhaps a physics teacher could shed some like on this

If this is valid then

90x + 40(30) = 75(x+30)

90x + 1200 = 75x + 2250

15x = 1050

x = 70

70 gallons of the hot water must be added

**Answer this Question**

**Related Questions**

chemistry - Rank the size of a change in temperature of one degree fahrenheit, ...

physics - what is the final temperature when 3 pound of water at 100 degree ...

Math - Problem Solving: Work Backward At 12 noon, Leslie recorded the ...

Algebra 2 - At 1:00 a.m., a homicide detective found the reading of a corpse's ...

Calculus - The celcius scale is devised so that 0 degrees celcius is the ...

math - The temperature on one day in January for Phoenix, AZ, is 59 degrees ...

Algebra 2 - I need help...especially finding out the time... At 1:00 a.m., a ...

Math..... - At 1:00 a.m., a homicide detective found the reading of a corpse's ...

Algebra - In order to covert temperature from Celsius to Fahrenheit,one can use ...

heat - one degree celsius indicates the same temperature change as what (which ...