This is a question of statistics so I just need an answe plsss help ​

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?

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor