Question
PSLE
The average height of a group of boys was 135.1 cm. When Mr Yee measured and recorded the height of these boys, he wrongly recorded one child's height as 137 cm when it should have been 173 cm. As a result, Mr Yee calculated the average height as 131.1 cm. How many boys were there in the group?
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PSLE
The average height of a group of boys was 135.1 cm. When Mr Yee measured and recorded the height of these boys, he wrongly recorded one child's height as 137 cm when it should have been 173 cm. As a result, Mr Yee calculated the average height as 131.1 cm. How many boys were there in the group?