Ignore the top pat of the picture that’s my government homework. The answer is 104ft.
Let's denote Cindy's age which is unknown with X
We know that Cindy's age is 3 times her age 6 years ago.
6 years ago Cindy's age was the present age (X) - 6 : X-6
The fact that the present age is 3 times her age 6 year ago can be written as:
3*(X-6)
So, finally:
X=3*(X-6)
3 x 2.7 is the same as 3 x 3 x 0.9 = 9 x 0.9 = 8.1
According to steam tables, steam produced from liquid water at 100 deg. C and standard atmospheric pressure (101.3 kPa) is 2257.0 kJ/kg.K.
Note : this value varies greatly with pressure and temperature.
