Question

The area of a rectangle gets reduced by 80sq.units if it's length is reduced by 5units and breadth is increased by 2units.if we incerase the length by 10units and decrease the breadth by 5units,the area will be increase by 50units sq units. Find the length and breadth of the rectangle by using graph

Answer 1

Answer:

let the length be x and breadth be y

Step-by-step explanation:

(x–5)(y+2)=xy–80

after solving it u get the following equation

2x–5y=–70

x+10(y-5)=xy+50

after solving

5x–10y= –100

from eq l

2x–5y= –70

5y= 2x+70

y=2x+70/5

plot the values

then from eq 2

5x-10y =–100

10y=5x+100

y=5x+100/10

plot the values and draw graph

you will get

x=–10

y=5