A piece of cloth costs Rs 70. If a piece is 4 metres longer and each metre costs Rs 2
less, the cost remains unchanged. How long is the piece?
(1) 8 m
(2) 9 m
13) 10 m
14 12 m
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Answer:
Let x be the length of cloth
x m cost ₹70
1m cost ₹70/x
now,new length=x+4
new rate=70/x+4
as per given in question difference in both the rate is of 2
:- (70/x)-(70/x+4)=2
x=10,-14
as length can't b negative so length of cloth will be 10 mt.
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