A coaching institute of Mathematics conducts Classes in two batches I and IIclass 10 maths

A coaching institute of Mathematics conducts Classes in two batches I and II
JH study maths
   / @jhstudy_maths  
A coaching institute of English (subject) conducts classes in two batches I and II and fees for rich & poor children are different. In batch I. it has 20 poor and 5 rich children and monthly collection is Rs. 9000 whereas in batch II it has 5 poor and 25 rich children and total monthly collection is Rs.
26000 using matrix method,
(i) Represent the given above information in x and y.
(ii) Find the monthly fee paid by poor child.
or
Find the difference between monthly fee paid by poor child and rich child.
(iii) If there are 20 rich and 10 poor children in batch II then what is the total fee collection from batch II
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