Question
Three girls, Olivia, Tiffany and Shannon had a total of 4140 pens. Some exchanges were made. First, Olivia gave Tiffany as many pens as Tiffany had. After that, Tiffany gave 14 of whatever she had then to Shannon. Finally, Shannon gave 13 of whatever she had to Olivia. As a result, they each had the same number of pens. How many pens did Olivia have at first?
5 m

Click button first when a symbol is required. X

Three girls, Olivia, Tiffany and Shannon had a total of 4140 pens. Some exchanges were made. First, Olivia gave Tiffany as many pens as Tiffany had. After that, Tiffany gave 14 of whatever she had then to Shannon. Finally, Shannon gave 13 of whatever she had to Olivia. As a result, they each had the same number of pens. How many pens did Olivia have at first?