What is$$\frac{\frac{1}{5}-\frac{1}{6}}{ \frac{1}{3}+\frac{1}{4}}+\frac{1}{2 }?$$

Evaluate the following expression 1/3^2

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

Equation for the calculation double 2 and then add 5