**Q: The ratio of blue cars to non-blue cars in the parking lot is 2:7. If there are 1260 cars in the parking lot, how many are blue?**

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**Answer**: 280

**Solution by hand:**

Number of blue cars = 2x

Number of non-blue cars = 7x

2x + 7x = 1260

9x=1260

x = 140

There are 2x blue cars, so there are 280 blue cars.

**Solution using my TI-84 Plus Program RATIO:**

Total number of items = 1260

Number of categories of items = 2 (blue and non-blue)

Ratio part for category 1 (blue) = 2

Ratio part for category 2 (non-blue) = 7

Distribution is: blue = 280 and non-blue = 980.

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