Question
PSLE
The average height of a group of children was 144.5 cm. When Mr Lim measured and recorded the height of these children, he wrongly recorded one child's height as 146 cm when it should have been 164 cm. As a result, Mr Lim calculated the average height as 141.5 cm. How many children were there in the group?
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PSLE
The average height of a group of children was 144.5 cm. When Mr Lim measured and recorded the height of these children, he wrongly recorded one child's height as 146 cm when it should have been 164 cm. As a result, Mr Lim calculated the average height as 141.5 cm. How many children were there in the group?