Question

sugar contain 5% water . What quantity of puri sugar should be added to 10 litres of water to reduce this to 2%​

Answer 1

Answer:

Answer

Initially 5% is the portion of the water in the mixture, 95% is the portion of the milk in the mixture.

So quantity of water(in litres) in the 10 litres =

100

5

×10 litres =0.5 litres

And also quantity of milk in 10 L mixture =

100

95

×10 L =9.5 L

Let X be the quantity of pure milk to be added to the mixture to make water content to 2%.

∴

(9.5+x)

0.5

×100=

9.8

0.2

×100

⇒9.8×0.5=0.2(9.5+x)

⇒4.9=1.9+0.2x

⇒0.2x=3.0

⇒x=15

So, 15 liters of pure milk should be added to the mixture to reduce the water content to 2%

Answer 2

Answer:

Solution:-

Initially 5% is the portion of the water in the mixture, 95% is the portion of the milk in the mixture.

So quantity of water(in litres) in the 10 litres =

100

5

×10 litres =0.5 litres

And also quantity of milk in 10 L mixture =

100

95

×10 L =9.5 L

Let X be the quantity of pure milk to be added to the mixture to make water content to 2%.

∴

(9.5+x)

0.5

×100=

9.8

0.2

×100

⇒9.8×0.5=0.2(9.5+x)

⇒4.9=1.9+0.2x

⇒0.2x=3.0

⇒x=15

So, 15 liters of pure milk should be added to the mixture to reduce the water content to 2% answer