Quiz 1: Ratio & Proportion

11. The ratio of oil to vinegar in a certain salad dressing is 8:5. How much oil must be blended with 7 liters of vinegar for that recipe? 12. If 4 T-shirts cost $15, how much will 12 T-shirts cost? 13. On a map with a scale of 1cm = 15km, two towns are 7.5 cm apart. How far apart are they in real life? Use cross products to find n. 14. 15. ................
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