Question

How many kg of pure salt must be added to
30 kg of 2 solution of salt and water to
increase it to a 10 solution,​

Answer 1

Step-by-step explanation:

Given : 2% salt must be added to 30 kg solution

Then amount of salt in 30 kg solution =

100

2

×30=0.6 kg

Let x kg of pure salt added

∴

30+x

0.6+x

=

100

10

⇒60+100x=300+10x

⇒100x−10x=300−60

⇒90x=240

⇒x=

90

240

8/3kg salt added in solution