Mohan gave a wooden board of length 160 3/4cm to a carpenter to make a shelf. The carpenter sawed off a piece of 130 2/5cm from it. Whatis the length of the remaining piece?
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160 3/4 -130 2/5
(160*4)+3/4 -(130*5)+2/5
643/4 -657/5
Take the LCM of 4 and 5 =20
(643*5)-(657*4)/20
3215-2628/20
587/20
29 7/20
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