Tammy is participating in a 5 -day cross-country biking challenge. She biked for 63 , 50 , 63 , and 60 miles on the first four days. How many miles does she need to bike on the last day so that her average

Tammy is participating in a 5 -day cross-country biking challenge. She biked for 63 , 50 , 63 , and 60 miles on the first four days. How many miles does she need to bike on the last day so that her average (mean) is 60 miles per day?

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Tammy is participating in a 5 -day cross-country biking challenge. She biked for 63 , 50 , 63 , and 60 miles on the first four days. How many miles does she need to bike on the …

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