CASE STUDY CHALLENGE
Matrices: NGO Cost Analysis
To promote the making of toilets in villages, an NGO hired an agency for generating awareness for the cause through house calls, letters and announcements through speakers.
The cost per mode of communication is given below:
| Cost per visit / communication | House calls | Letters | Announcements |
|---|---|---|---|
| ₹ | 15 | 10 | 25 |
The number of contacts made in two villages X and Y were as follows:
| Village | Houses visited | Letters sent | Number of announcements |
|---|---|---|---|
| X | 100 | 150 | 110 |
| Y | 150 | 200 | 150 |
Using the above information, answer the following questions:
Answer the following:
| (i) | Write A, the matrix for cost per visit/communication. | [1] |
| (ii) | Write B, the matrix representing number of contacts in two villages, X and Y. | [1] |
| (iii) | (a) Find the cost (in ₹) incurred by the NGO for village X.
— OR —
(b) Find the cost (in ₹) incurred by the NGO for village Y. |
[2] |