Example 7 Kanchan bought a watermelon weighing 5 kg 200 g. Out of this she gave 2 kg 750 g to her neighbour. What is the weight of the watermelon left with Kanchan? Total weight = 5 kg Amount given to neighbour = 2 kg 750 g Amount left = 5 kg 200 g – 2kg 750 g = (5 kg + 200 g) – (200g – 750 g) = (5 kg – 2 kg) + (200 g – 750 g) = 3 kg – (–200 g +750 g) = 3 kg – (750 – 200) g = 3 kg – 550 g = 3 kg – 550 × 1 g = 3kg – 550 × 1/1000 kg = 3 – 𝟓𝟓𝟎/𝟏𝟎𝟎𝟎 kg = (3 × 1000)/1000 – 550/1000 kg = ((3000 − 550))/1000 = 𝟐𝟒𝟓𝟎/𝟏𝟎𝟎𝟎 = 2.450 ∴ Amount left = 2.450 kg

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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.

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