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Kelly averaged 292 miles on the first four days of her trip. She averaged only 220 miles on the last five days of her trip. What was the overall average number of miles driven per day?

Respuesta :

252 miles overall.
To find this, I took the 292 average for 4 days and multiplied it by 4. I also took the 220 mile average for 5 days and multiplied it by 5. I then added these two numbers and I got 2268 miles. In order to find the average, I divided the 2268 miles by the 9 total days.

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