Question

for uttrakhand flood victims two section a and b of class x contributed rs1500 ifthe contribution of xa was rs100 less than that xb find the graphical of amount contributed both section.

Answer 1

let contribution of section A be X
and_________________ B be Y
ATQ....
X+Y=1500_____eq1


Y=X+100_______eq2
,
from eq 1&2
X+X+100=1500
2x =1400
X =700


Value of X =700
&______Y=700+100
=800.....

Answer 2

Equations:
First, let's take contribution of class "a" to be "a" only and contribution of class "b" to be "b" only.

Contribution of       a+b=1500       (1)
Contribution of       a=b-100          (2)

Substituting 1 in 2 we get,

a+b=1500
b-100+b= 1500

rearranging,

b+b-100= 1500

2b-100=1500

2b=1500+100

2b=1600

b=1600/2

b=800    (3)

Now, we have contribution of class "b"

Substituting 3 in 1,

a+b = 1500

a+800 = 1500

a = 1500-800

a = 700

Therefore, we now have contributions of class a and b. We can now draw the graph as follows:

Using equation (1) we can assume any random "x axis" value to find the corresponding "y axis" value
( Tip: keep these random values as close to the answer we found before as possible)

If "a"= 600,
600+b=1500
b=1500-600
b=900.

If  a= 800
a+b=1500
800+b= 1500
b=1500-800
b=700.

Section "a"  x axis  :  600     700     800 
Section "b"  y axis  :  900     800     700

Please try to do the graph on your own.