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Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


Transcript

Ex 8.4, 5 Tina had 20 m 5 cm long cloth. She cuts 4 m 50 cm length of cloth from this for making a curtain. How much cloth is left with her?Total length of cloth = 20 m 5 cm Cloth cut for making curtain = 4 m 50 cm Cloth left = 20 m 5 cm − 4m 50 cm = (20 m + 5 cm) – (4 m + 50 cm) = (20 m – 4 m) + (5 m – 50 cm) = 16 m − (50 cm – 5 cm) = 16 m − 45 cm = 16 m − 45 × 1 cm = 16 m − 45 × 1/100 m = 16 m − 45/100 m = 16 × 100/100 − 45/100 = 𝟏𝟔𝟎𝟎/𝟏𝟎𝟎 − 𝟒𝟓/𝟏𝟎𝟎 = ((1600 − 45)/100) = 1555/100 = 15.55 m ∴ Cloth left = 15.55 m

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.