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

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