Question
PSLE
The average height of a group of children was 131.4 cm. When Mr Choo measured and recorded the height of these children, he wrongly recorded one child's height as 128 cm when it should have been 182 cm. As a result, Mr Choo calculated the average height as 128.4 cm. How many children were there in the group?
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PSLE
The average height of a group of children was 131.4 cm. When Mr Choo measured and recorded the height of these children, he wrongly recorded one child's height as 128 cm when it should have been 182 cm. As a result, Mr Choo calculated the average height as 128.4 cm. How many children were there in the group?