Asked by | 5th Jun, 2009, 05:37: PM
assume that he invested Rs. x and Y respectively at 12 % and 10%
note that the coefiicients are interchanfing places, so we can use the method of once adding the equations and one subtracting them to get new, simpler equations and solving them.
or else you can use any of the standard methods of solving the system.
Now we have
11x+11y=13200 i.e. x+y=1200
Solving these new equations we get
Answered by | 7th Jun, 2009, 12:24: PM
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