Question
PSLE
The average height of a group of students was 152.7 cm. When Mr Sim 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 Sim calculated the average height as 149.7 cm. How many students were there in the group?
2 m

Click button first when a symbol is required. X

PSLE
The average height of a group of students was 152.7 cm. When Mr Sim 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 Sim calculated the average height as 149.7 cm. How many students were there in the group?