Netra bought a satin ribbon of some length.She wants to cut the ribbon in equal pieces of same length.If she cuts the ribbon of a particular length she gets 7 equal pieces and a small piece 1cm long is left.If she increases the length of each piece by 1cm she gets 6 equal pieces and a small piece of 2cm is left.What is the original length of the satin ribbon she bought?
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2
Answer:
20cm is the correct answer
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5
Answer:
7 equal parts and a small piece of 1 cm = 7x+1
lengh is increase by 1 cm that is x+1
6 equal parts and a small piece of 2 cm = 6(x+1)+2
there fore both are equal
7x+1 = 6(x+1)+2
7x+1 = 6x+6+2
7x+1 = 6x+8
7x-6x = 8-1
x = 7
7x+1 = 7*7+1 = 49+1 = 50
Ans : The ribbon is of 50 cm
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