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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