Question

The steps of a staircase are marked from 1 to 7 and weights are placed according to the number marked on it such as 1g, 2kg, 3kg, 4kg.....7g. Calculate the total weight required?

• A. 12.016 kg
• B. 12016 g
• C. 12.016 g
• D. 12016 kg

Answer 1

Answer: (A), (B)

12016 g

$\to$Weight are placed according to the numbers on the staircase = 1g , 2kg, 3g, 4kg, 5g, 6kg, 7g

$\to$Sum of the weights $=1\text{g}+2\text{kg}+3\text{g}+4\text{kg}+5\text{g}+6\text{kg}+7\text{g}$

$\to$Convert all the units into grams
$=1\text{g}+2000\text{g}+3\text{g}+4000\text{g}+5\text{g}+6000\text{g}+7\text{g}\because (1\text{kg}=1000\text{g})$
$=12016\text{g}$

Convert $12016\text{g}$ to kg
$12016\text{g}=12.016\text{kg}$ $\because$(1 kg = 1000g )
$=12.016\text{kg}$

$\to$Hence, the weight of weights required to place on the staircase is 12.016kg or 12016g