In the one minute rope skipping competition, Xiao Li's average number of two jumps is 120. To make the average number of three jumps 125, how many times should she jump for the third time?
Two jumps: 120 × 2 = 240
Three jumps: 125 × 3 = 375
The third time should jump: 375-240 = 135
I hope my answer will help you
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