Question

A carpet of size 5 m x 2 m has 25 cm wide red border. The inner part of the carpet
is blue in colour. Find the area of blue portion. What is the ratio of the areas of red portion to blue portion?​​

Answer 1

Answer:

Convert al to cm:

5m = 500 cm

2m = 200 cm

Area of the whole carpet = 500 x 200 = 100 000 cm

Find Length and breadth of the blue portion:

Length = 500 - 25 - 25 = 450 cm Breadth = 200 - 25 - 25 = 150 cm

Find area of the blue portion: Area = Length x Breadth = Area = 450 x 150 = 67500 cm?

Find the area of the red portion: Area = 100 000 - 67500 = 32500 cm?

Ratio of the red portion to blue portion: Red : Blue = 32500 : 67500 = 1:27

Answer: 1:27

Answer 2

Answer:

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