Question
PSLE
The graph shows the number of mobile phones sold from July to November. The number of mobile phones sold in August is equal to the average number of mobile phones sold from August, September, October and November. Find the number of mobile phones sold in July.

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PSLE
The graph shows the number of mobile phones sold from July to November. The number of mobile phones sold in August is equal to the average number of mobile phones sold from August, September, October and November. Find the number of mobile phones sold in July.