spdycastellanoowq9j7 spdycastellanoowq9j7

23-09-2017
Chemistry

contestada

if one person can clean a house in 5 hours and the second person can clean the same house in 4 hours, how long would will it take to clean the house if they worked together?

Respuesta :

Аноним Аноним

23-09-2017

1/5 + 1/4 =1/x

4x + 5x = 20

9x = 20

x = 2.22 hours Answer

Answer Link

Otras preguntas

Decimals between 11.4 and 15.0 with an interval of 0.4 between each pair of decimals

David paints 3 rooms in 7 hours at the same pace how long would it take him to paint 15 rooms

Which sentence correctly conveys that same meaning as this sentence Eres paciente

what does taxation without representation

Hypothesize how global warming might affect the polar ice caps and salinity of ocean water

What is the range of values for the measurement 500+-4%

i cant do this somsone halp

Which of the following is a dependent clause? he received tickets to the game although we had tickets to the game we had tickets to the game they bou

what about 0.09 is 1/10 of what?

Give the measures shown in the diagram, which two triangles are congruent