Question

Madison saves 40% of all that she earns for washing cars. So far she has saved $72. How much has she earned in all?

Answer 1

Answer:

Madison has earned 180 dollars in all.

Step-by-step explanation:

Let $x$ denotes amount earned by Madison.

Percentage of amount saved by Madison $=\frac{40}{100} x$

Amount saved by Madison $=72$ dollars

Therefore,

$\frac{40}{100}x=72\\x=72(\frac{100}{40})$

$=180$ dollars

So,

Madison has earned 180 dollars in all.