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3 years ago

If Jasper installs a floor himself, it will take him 7 hours. Working with Yolanda, it will take them 3 hours.

Mathematics

2 answers:

Svetllana [295]3 years ago

7 0

Answer: 5 $\frac{1}{4}$ hrs

Explanation:

Jasper: $\frac{1}{7}$ per hr

Yolanda: $\frac{1}{x}$ per hr

Together: $\frac{1}{3}$ per hr

Jasper + Yolanda = Together

$\frac{1}{7}$ + $\frac{1}{x}$ = $\frac{1}{3}$

$(21x)\frac{1}{7}$ + $(21x)\frac{1}{x}$ = $(21x)\frac{1}{3}$

3x + 21 = 7x

21 = 4x

$\frac{21}{4}$ = x

$5\frac{1}{4}$

Reil [10]3 years ago

4 0

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?

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20 points ill give you brainliest and a thanks!!!

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