A chemist has m gram salt water that is m% salty. How many grams of salt must he add to make a solution 2m% salty?
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Answer:
1.5
Explanation:
Answered by
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Answer:
Explanation:
m gm of salt water
m% of salt in water
⇒m×
100
m
gram of salt
⇒m−
100
m
2
gram of water
Now, for 2m% salt solution,
⇒M×
100
2m
gram of salt in water(M is changed total mass)
⇒M−
100
M(2m)
gram of water which is equal to the earlier one,
⇒M(1−
100
2m
)=(m−
100
m
2
)
⇒M=
100−2m
100m−m
2
- putting it to grams of salt
⇒ gram of salt=
100−2m
m(100−m)
×
100
2m
=
100−2m
m
2
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