A trust caring for handicapped children gets rs 30000 every month from its donors.The trust spents half of the funds received for medical and educational care of children and for that it charges 2% of the spend amount from them,and deposits it in a pvt bank to get the money multiplied so that their institution function smoothly.What percemt of interest should the trust get from bank to get a total of rs1800 every month?
use matrix method to find answer

Dear Student,
Please find below the solution to the asked query:

It is given that out of Rs 30000 received the trust spends half for medical and education care. So,Amount deposited in private bank will be the remaining half. i.e., Rs 15000Now,Trust charges 2% of the money spent for medical and education care. So, earning of trust from above charges=2% of 15000=2100×15000=Rs 300Let the earning of trust from above charges be X and the earning from interest obtained from bank be Y.Then,X+Y=1800        .....1And,X=300X+0×Y=300   ....2Now write in matrix form,1110XY=1800300
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