Math, asked by BrainlyHelper, 1 year ago

By a reduction of Rs. 2 per kg in the price of sugar, Anita can purchase 2 Kg sugar more for Rs. 224. Find the original price of sugar per kg. What value of Anita is depicted in the question?
Value Based Question

Answers

Answered by leninviki
39
COST OF SUGER X
WEIGHT OF SUGER=Y
THERE WAS SAME AMOUNT IN TWO CASE
XY=224
(X-2)(Y+2)=224
XY-2Y-4+2X=224
2(X-Y)-4=0
X-Y=2
X=2+Y
Y(2+Y)=224
2Y+Y^2=224
WE KNOW THAT 15^2=225 SO Y MUST BE LESS THEN 15
Y=14
X=16
cost of surge=16
she bought 14 kg

Answered by NotKnowMaths
25

Answer:

Step-by-step explanation:

Let cost of suger = X

And weight of suger = Y

In both the cases the price was same...

Therefore,

XY=224 - (1)

(X-2)(Y+2)=224

XY+2x-2y-4=224 - (2)

Subtracting. (1) and (2) we get

-2x+2y+4=0

-2(x-y)=-4

x-y=-4/-2

x-y=2

x=2+y

Now putting value of x in eq - (1)

XY=224

(2+y)Y=224

Y^2+2y=224

Y^2+2y-224=0

Y^2+16y-14y-224

Y(y+16)-14(y+16)

(Y-14)(y+16)

Weight cannot be negetive that's why Y=14

We know that x=2+y

Therefore,

X=2+y

X=2+14 (if y=14 finded)

X=16

Therefore,

Cost of suger per kg = ₹16

Weight of suger purchased by Anita = 14kg

I think this helps u....... ; )

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