Question
The average number of wafers in Box C, Box D and Box E is 38. Box C has 49 wafers. The number of wafers in Box D is four times the number of wafers in Box E. What is the number of wafers in Box E?
2 m

Click button first when a symbol is required. X

The average number of wafers in Box C, Box D and Box E is 38. Box C has 49 wafers. The number of wafers in Box D is four times the number of wafers in Box E. What is the number of wafers in Box E?