Question

Elizabeth participated in a music-a-thon. Mr.Caesar gave the charity a total of $7.50. How many hours did she sing

Answer 1

,From the question

`\begin{gathered} \text{for 1 hour she was given = \$0.50} \\ \text{let h be the number of hours she was given \$7.50 for} \end{gathered}`

Let do this in ratio form like this

`\begin{gathered} (1)/(h)=(0.50)/(7.50) \\ we\text{ cross multiply to get} \\ 0.50h=7.50 \\ \text{divide }both\text{ sides by 0.50} \\ (0.50h)/(0.50)=(7.50)/(0.50) \\ h=15\text{ hours} \end{gathered}`

Therefore,

With the above solution we will have that