the Length breadth and height of a room are in the ratio 5:4:2 if the length is increased by 20% and the breadth by 25% while the height is reduced by 25% what will happen to the other area of four wall of the room
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Original dimensions:
The Length breadth and height of a room are in the ratio 5:4:2
A1 = 5x2 = 10
A2 = 4x2 = 8
New dimensions:
l = 1.2x5 = 6
b = 1.25x4 = 5
h = 0.75x2 = 1.5
A3 = 6x1.5 = 9
A4 = 5x1.5 = 7.5
The areas of two walls have deceased in the ratio = 10:9
The areas of the other two walls have increased in the ratio = 7.5 : 8
= 15 : 16
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Step-by-step explanation:
The Length breadth and height of a room are in the ratio 5:4:2
A1 = 5x2 = 10
A2 = 4x2 = 8
New dimensions:
l = 1.2x5 = 6
b = 1.25x4 = 5
h = 0.75x2 = 1.5
A3 = 6x1.5 = 9
A4 = 5x1.5 = 7.5
The areas of two walls have deceased in the ratio = 10:9
The areas of the other two walls have increased in the ratio = 7.5 : 8
= 15 : 16
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