58.1k views
1 vote
Solve the following problems by writing a proportion. a) what is 70% of 4b) 5 is what percent of 20?

1 Answer

2 votes

We have in a) that


\begin{gathered} 70\cdot\text{ }(4)/(100)\text{ = }\frac{\text{70 }\cdot\text{ 4}}{100} \\ =\text{ 2.8} \end{gathered}

So the answer for a) is 2.8

Now in b) we have that


5\cdot\text{ }(100)/(20)\text{ = 25}

So the answer for b) is 25%.