What do I do in the right side column

Mathematics

2 answers:

KIM [24]3 years ago

8 0

The same thing to the other side

Allushta [10]3 years ago

5 0

It's basically the sam ways you did to the other side

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Ann cleans an apartment in 12 hours and liz cleans an apportment in 18 hours. How long would it take to clean an appartment toge

Tresset [83]

If Ann cleans in 12 hours then she cleans $\frac{1}{12}$ of the apartment per hour. Similarly Liz cleans $\frac{1}{18}$ of the appartment per hour. So together then can clean $\frac{1}{12}+\frac{1}{18}=\frac{5}{36}$ of the apartment for hour. Therefor it will take them $\frac{36}{5}=7.2$ hours to clean.

The general formula $R_{c}=\frac{AB}{A+B}$ can be used as a check if needed.

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2 years ago

Divided 80 by my number, and then added 13. The result was 93. What was my number?

igor_vitrenko [27]

The number is 6400.

We have given that,

divided 80 by my number, and then added 13.

<h3>What is the expression?</h3>

An expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

Suppose the number is x

$\frac{x}{80}+13=93$