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

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