IDNStudy.com, ang platform na nag-uugnay ng mga tanong sa mga solusyon. Makakuha ng mga sagot sa iyong mga tanong mula sa aming mga eksperto, handang magbigay ng mabilis at tiyak na solusyon.

Jun can clean a room in 4 hours. Ana can clean the same room in 3 hours. Working together, how long will it take them to clean the room?

Sagot :

Let x be the time it take them to clean the room together:

Working together Equation:

  1              1
---- (x)   + ----- (x) = 1
  4              3

LCD: 12

Multiply each term by 12:

(12) [ x/4  +  x/3 = 1 ] (12)

3x + 4x = 12

7x/7 =12/7

x = 1 ⁵/₇  hours

ANSWER:  It will take 1 ⁵ /₇  hours for Jun and Ana working together to clean the same room.

Please note that when more people work on the same work/job, the faster it will be completed.