Question
PSLE
The average height of a group of boys was 125.4 cm. When Mr Heng measured and recorded the height of these boys, he wrongly recorded one child's height as 180 cm when it should have been 108 cm. As a result, Mr Heng calculated the average height as 131.4 cm. How many boys were there in the group?
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PSLE
The average height of a group of boys was 125.4 cm. When Mr Heng measured and recorded the height of these boys, he wrongly recorded one child's height as 180 cm when it should have been 108 cm. As a result, Mr Heng calculated the average height as 131.4 cm. How many boys were there in the group?