Question 1096344
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Let T be the number of 10-rs notes.

Then the number of 50-rs notes is (40-T).


The money equation is

10*T + (40-T)*50 = 1000.


Simplify and solve for T:

10T + 2000 - 50T = 1000  ====>  -40T = 1000-2000 = -1000  ====>  T = {{(-1000}/(-40)}}} = 25.


<U>Answer</U>.  25 10-rs notes and 40-25 = 15 50-rs notes.


<U>Check</U>.   25*10 + 15*50 = 250 + 750 = 1000.    ! Correct !.
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