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

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