ElectricPavlov

840 rooms / 9 floors =  ~~93 rooms/floor   (it is not 'evenly split'  as 9 does not go into 840 'evenly')

Question is a bit unclear w/out punctuation.....

m

Maybe:

(1431 - 150)/15.25 = 84 hours

sqrt (3*3^2)  -  sqrt(4*3) + sqrt (3*100)

3 sqrt 3        - 2 sqrt 3     +  10 sqrt 3

(3-2+10)(sqrt 3)

11 sqrt 3

2 \(\sqrt[4]{}\)(2³  * 3³ )

2 \(\sqrt[4]{}\)(216)

x = allens grocery tab

2x = original money

(2x * 1/2) * 2/3   =   6    Solve for 'x'

PV = nRT               The Universal   (or IDEAL) gas law

V = 5 liters

n = 4.65 moles

T = 39.3 C   =   312.45 K

R = ideal gas constant =  0.082 057 338(47)L atm mol−1 K−1

Plug in these values and solve for  P (pressure)   ....in  atmospheres

I think I would like that site if you find it again!  I used a quarter and a pen....then scanned in......ugh. 

THERE....you had it     arctan (7/15) = 25.016^o  ~ 25.0 ^o

Here is a Venn diagram:

Better check that arc tan calc !