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

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