It takes you 45 minutes to clean the fish tank and it takes your sister 30 minutes. how long does it take the two of you working together to clean the fish tank

Answer:

My 1 minute work = $\frac{1}{45}$

My sisters 1 minute work = $\frac{1}{30}$

My and My sister's 1 minute work = $\frac{1}{45}+\frac{1}{30}$

= $\frac{5}{90}$

= $\frac{1}{18}$

$\therefore$ Me and My sister will finish the work in $\frac{18}{1} =18$ minutes

5 0

3 years ago

550000000000000000 • 0.00000000044

nasty-shy [4]

Answer:

550000000000000000 0.00000000044

Step-by-step explanation:

000000Oo

5 0

3 years ago

Round to the nearest tenth if neccessary 69.904 divided by 34

Cloud [144]

Answer:

2.056

rounded to the nearest tenth: 2.1

Plz mark brainliest!! :DD

7 0

3 years ago

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Can somebody please help me with this math question

ycow [4]

The answer to the question is 5 so CD=5

6 0

3 years ago

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