Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
the area oa a rectangle whose length is five more than twice its width is 75 square unit. the length is :- 5 unit OR 10 unit OR 15 unit OR 20 unit ?
Let the width of the rectangle = x unitsLength = (2 x + 5) unitsAccording to the question,Area = x(2x + 5)=> 75 = 2x2+5x2x2+5x=> 2x2+5x−75=02x2+5x−75=0=> 2x2+15x−10x−75=02x2+15x−10x−75=0=> x(2x+15)-5(2x+15)=0=> (2x+15)(x-5)=0=> x = 5 and −152−152Width cannot be negative.Width = 5 unitsLength=2x+5 =2×5+52×5+5=15 units
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -