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Laura is bowling 5 games. Her first 4 scores were 83, 131, 100, and 147. To end up with an average score of at least 122.2, what is the lowest score Laura will need in the fifth game?

1 Answer

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Average = sum / total number

total game bowled by laura = 5

first 4 scores are 83, 131, 100, and 147

Let x be the fifth score

The average score = 122.2

Since average = sum / total number

122.2 = 83 + 131 + 100 + 147 + x / 5

introducting cross multiplibcation

122.2 x 5 = 83 + 131 + 100 + 147 + x

611 = 461 + x

let isolate x by collecting the like terms

x = 611 - 461

x = 150

The least score to have an average of 122.2 is 150

Therefore, the answer is 150 for the fifth score

User Anoop P S
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