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VashaNatasha [74]
3 years ago
13

WILL GIVE BRAINLIEST IF RIGHT AND WORTH 75 POINTS

Mathematics
2 answers:
drek231 [11]3 years ago
4 0

Answer: Team one = 1/5

Team 2 = 4/21

Team A is the fastest

Step-by-step explanation: Answer: Team one = 1/5

Team 2 = 4/21

Team A is the fastest

Step-by-step explanation: TEAM A

Tammy working alone in 1hr can clean 1/2

Melissa working alone in 1 hr  can clean 1/3

working together in 1hr ,let x represent the area they will clean  we have

\frac{1}{1/2} + \frac{1}{1/3} = 1/x

⇒ 3 + 2 = 1/x

5 = 1/x

x = 1/5

TEAM B

Santay working alone can clean  1/4

Leticia working alone in 1 hr can clean 4/5

working together in 1 hr ,let y represent the amount they clean,  we have

\frac{1}{1/4} + \frac{1}{4/5} = 1/y

4 + 5/4 = 1/y

21/4 = 1/y

y = 4 /21

comparing x and y , 1/5 is greater than 4/21 , therefore Team A is faster

Molodets [167]3 years ago
4 0

Answer:

Team 1 cleaned 5/6 of their area in an hour, and team 2 cleaned 1 1/20 of their area in an hour. Therefore, team 2 was fastest

Step-by-step explanation:

general:

least common multiple of 2 (1/2), 3 (1/3), 4 (1/4), and 5 (4/5) is 60.

team 1:

using the LCM (60) we multiply 1/2 by 30 to get 30/60 and 1/3 by 20 to get 20/60. 20/60 + 30/60 = 50/60 = 5/6

team 2:

Using the LCM (60) we multiply 1/4 by 15 to get 15/60, and 4/5 by 12 to get 48/60. 48/60 + 15/60 = 63/60 = 1 3/60 = 1 1/20

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