Three painters, Beth, Bill, and Edie, working together, can paint the exterior of a home in 12 hours. Bill and Edie together have painted a similar house in 15 hours. One day, all three worked on this same kind of
house for 5 hours, after which Edie left. Beth and Bill required 10 more hours to finish. Assuming no gain or
loss in efficiency, how long should it take each person to complete such a job alone?

i dont know but hope u do

step-by-step explanation:

thats not a system of equations, that is a solution

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.