Question

Student Weight of Backpack Amar 20,100 g Bhuvan 19.2 kg Shankar 21,300 g Lily 20,120 g Manish 19.8 kg Students in Ms. Alka’s class have backpacks of different weights, as shown in the table. Which student’s backpack is the heaviest?

Answer 1

Weight of Amar's backpack= 20100 g

Weight of Bhuvan's backpack= 19.2 kg =(19*1000)+2 g =19002 g

Weight of Shankar's backpack= 21300 g

Weight of Lily's backpack= 20120 g

Weight of Manish's backpack= 19.8 kg =(19*1000)+8 g =19008 g

Comparing all weights in grams, Shankar's backpack is the heaviest i.e. 21300 g

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Answer 2

First, we should make sure all of these weights are in the same unit of measurement. Let's convert all the grams to kilograms.  

In kilograms, we already have these students:  

• Bhuvan, 19.2 kg
• Manish, 19.8 kg

There are 1,000 grams in a kilogram, so divide the amount of grams by 1,000 to convert to kilograms.  

20,100 ÷ 1,000 = 20.1 (Amar)

21,300 ÷ 1,000 = 21.3 (Shankar)  

20,120 ÷ 1,000 = 20.12 (Lily)  

So now we have (ordered from greatest to least):  

• 21.3 kg (Shankar)
• 20.12 kg (Lily)
• 20.1 kg (Amar)
• 19.8 kg (Manish)
• 19.2 kg (Bhuvan)

The student with the heaviest backpack is Shankar, with a backpack of 21.3 kg.