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  • Brainly User
2015-10-26T20:27:26+05:30
Uation: salt + salt = salt 0.20*60 + 1*x = 0.40(60+x) ----- Multiply thru by 100 to get: 20*60 + 100x = 40*60 + 40x ----- Subtract 40x from both sides Subtract 20*60 from both sides ------ 60x = 20*60 ---- x = 20 litres (amt. of concentrated salt solution to add)
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