Question
PSLE
The average height of a group of pupils was 125.2 cm. When Mr Loo measured and recorded the height of these pupils, he wrongly recorded one child's height as 194 cm when it should have been 149 cm. As a result, Mr Loo calculated the average height as 130.2 cm. How many pupils were there in the group?
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PSLE
The average height of a group of pupils was 125.2 cm. When Mr Loo measured and recorded the height of these pupils, he wrongly recorded one child's height as 194 cm when it should have been 149 cm. As a result, Mr Loo calculated the average height as 130.2 cm. How many pupils were there in the group?