Luis and Chandra are cleaning their house which has 12 rooms, each about the same size. If Luis

cleans them by himself, it takes him 24 minutes.

If Chandra cleans them by herself, it takes her

48 minutes. If they both clean the house, they will

finish in 16 minutes. If they work together, how

many rooms will Chandra clean and how many

will Luis clean?

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

a

step-by-step explanation:

the answer is 5/14.

hope this .

h * s * a

h = history teacher

s = science teacher

a =   art teacher.

i see no data table, but just multiply the number of history teachers, science teachers, and art teachers.