6th grade math i dont understand!!!!!!

The histogram shows the number of points scored by a basketball team for one season.

Histogram named as ALTDCPoints Scored in One SeasonALTDC. 3 games scored between 69 to 76, 6 games scored between 77 to 84, games scored between 85 to 92 and 1 game scored between 93 to 100.

According to the histogram, in what percentage of games did the team score between 77 and 92 points?
Round your answer to the nearest percent.

Respuesta :

umm im older and I dont even understand that
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