188k views
4 votes
If Jasper installs a floor himself, it will take him 7 hours. Working with Yolanda, it will take them 3 hours.

User Hector
by
8.4k points

2 Answers

3 votes

Answer:

this is the rest of the question

Step-by-step explanation:

If they work together, what is the missing value in the table that represents the part of the floor Jasper will install?


anyone got the answer?

User CptDayDreamer
by
8.0k points
2 votes

Answer: 5
(1)/(4) hrs

Step-by-step explanation:

Jasper:
(1)/(7) per hr

Yolanda:
(1)/(x) per hr

Together:
(1)/(3) per hr

Jasper + Yolanda = Together


(1)/(7) +
(1)/(x) =
(1)/(3)


(21x)(1)/(7) +
(21x)(1)/(x) =
(21x)(1)/(3)

3x + 21 = 7x

21 = 4x


(21)/(4) = x


5(1)/(4)

User CallOfVoid
by
8.0k points