A pencil cost rs 0.25, a pen cost rs 10 and a book cost rs 25. how many each one should buy so that the total number of articles is 100 and the total amount is rs. 1000?
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let the quantities be x, y z
x+y+z=100
x/4+10y+25y=1000
60z=39x
since x, y, z are whole numbers
only possible solution is 60,1, 39
x+y+z=100
x/4+10y+25y=1000
60z=39x
since x, y, z are whole numbers
only possible solution is 60,1, 39
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