Question
On 3 July to 6 July, an average of 56 wafers were sold and from 7th July to 11 July, an average of 30 wafers were sold. $264 worth of wafers were sold from 12 July to 22 July. Given that a wafer was sold for $4, find the average number of wafers sold from 3 July to 22 July.
4 m

Click button first when a symbol is required. X

On 3 July to 6 July, an average of 56 wafers were sold and from 7th July to 11 July, an average of 30 wafers were sold. $264 worth of wafers were sold from 12 July to 22 July. Given that a wafer was sold for $4, find the average number of wafers sold from 3 July to 22 July.