Question
Line segment AB represents 50%, Find the length of a line segment which is 100% (whereas AB = 5cm)
- 5cm
- 10cm
- 15cm
- 20cm
Hint:
50% is fractionally represented as 
which is half of whole i.e. 
. Thus to find the whole multiply by 2.
The correct answer is: 10cm
Line segment AB represents 50% and length of AB = 5cm
This means, 5cm = 50%
Multiply both sides by 2
= (5 
2)cm = (50 2 )%
= 10 cm = 100%
Thus, the length of line segment which is 100% is 10cm
Alternatively,
By cross multiplication
50% = 5cm
100% = 
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