1.

The Length Of A Rectangular Increased By 10% And It;s Breadth Is Decreased By 10 %. Then The Area Of The New Rectangle Is?

Answer»

LENGTH of the be let ‘l’ units and breadth be b units 

Area =LB sq. Units 

Now length =(110/100 l) = 11l/10 

NEW breadth =(90/100 b) = 96/10 

Now area (11l/10 x 96/10)Sq.units = (99/100 lb)sq.unit 

Area decreased = (lb -99/100 lb)sq.units =lb/100 sq.Units 

Percentage decreased =(lb/100 x 1/lb x 100)% = 1%.

Length of the be let ‘l’ units and breadth be b units 

Area =lb sq. Units 

Now length =(110/100 l) = 11l/10 

New breadth =(90/100 b) = 96/10 

Now area (11l/10 x 96/10)Sq.units = (99/100 lb)sq.unit 

Area decreased = (lb -99/100 lb)sq.units =lb/100 sq.Units 

Percentage decreased =(lb/100 x 1/lb x 100)% = 1%.



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