Question
PSLE
The average height of a group of boys was 124.6 cm. When Mr Choy measured and recorded the height of these boys, he wrongly recorded one child's height as 194 cm when it should have been 149 cm. As a result, Mr Choy calculated the average height as 129.6 cm. How many boys were there in the group?
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PSLE
The average height of a group of boys was 124.6 cm. When Mr Choy measured and recorded the height of these boys, he wrongly recorded one child's height as 194 cm when it should have been 149 cm. As a result, Mr Choy calculated the average height as 129.6 cm. How many boys were there in the group?