Question
PSLE
The graph shows the number of stereo systems sold from February to May. The number of stereo systems sold in March is equal to the average number of stereo systems sold from February, April and May. Find the number of stereo systems sold in March.

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PSLE
The graph shows the number of stereo systems sold from February to May. The number of stereo systems sold in March is equal to the average number of stereo systems sold from February, April and May. Find the number of stereo systems sold in March.