Answered

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Milan is participating in a 4-day cross-country biking challenge. He biked for 48, 51, and 59 miles on the first three days. How many miles does he need to bike on the last day so that his average (mean) is 55 miles per day?

Sagot :

Answer:

62 miles

Step-by-step explanation:

The formula for average is given as

Sum of values / Number of values

Let x = miles on the last day

Hence

48 + 51 + 59 + x/4 = 55

Cross Multiply

= 158 + x = 220

x = 220 - 158

x = 62

Therefore, he needs to bike 62 miles on the last day so that his average (mean) is 55 miles per day.

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