Question
The average length of 9 pieces of ribbon was 162 cm. When 3 pieces of ribbons were used, the average length of the remaining pieces of ribbons became 100 cm. What was the average length of the 3 pieces of ribbons used?
4 m

Click button first when a symbol is required. X

The average length of 9 pieces of ribbon was 162 cm. When 3 pieces of ribbons were used, the average length of the remaining pieces of ribbons became 100 cm. What was the average length of the 3 pieces of ribbons used?