Question
PSLE
The average height of a group of students was 137.3 cm. When Mr Loh measured and recorded the height of these students, he wrongly recorded one child's height as 159 cm when it should have been 195 cm. As a result, Mr Loh calculated the average height as 131.3 cm. How many students were there in the group?
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PSLE
The average height of a group of students was 137.3 cm. When Mr Loh measured and recorded the height of these students, he wrongly recorded one child's height as 159 cm when it should have been 195 cm. As a result, Mr Loh calculated the average height as 131.3 cm. How many students were there in the group?