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The cost of four dozen proof machine ribbons and five dozen
accouting machine ribbons was Rs.160/-. If one dozen
accounting machine ribbons cost Rs.20/-, what is the cost of
a dozen proof machine ribbons?
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Answer / anitha bharathan
Given:
4( dozen Proof machine)+5(dozen Accounting machine)=160
Also 1 dozen Accounting machine=20
Therefore,
4( dozen Proof machine)+5(20)=160
4( dozen Proof machine)=160-100
4( dozen Proof machine)=60
dozen Proof machine=60/40
dozen Proof machine=15
| Is This Answer Correct ? | 40 Yes | 1 No |
Answer / karthick.m
5 dozen *20 =100
so160-100=60
60 /4 = 15 per dozen
| Is This Answer Correct ? | 10 Yes | 0 No |
Answer / rbarunkumar
4x+5y=160
4x+5(20)=160
4x=160-100
x=60/4
x=15.
| Is This Answer Correct ? | 9 Yes | 0 No |
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