60 kg of an alloy of copper and zinc contains 60% copper.how much copper must be added into it to make an alloy containing 80% copper?
Answers
Answered by
3
Answer:
20 kg
Step-by-step explanation:
nehasharma16:
how??
Answered by
14
Answer :-
amount of copper in allow = 6/10×60 = 36 kgs
amount of 80% of copper = 8/10 × 60 = 48 kgs
amount of copper to be added = (48 - 36)kg = 12 kgs.
thnks !
but In the answer sheet the right answer is 60kg.
nope ans printed is absolutely wrong bcoz the mass of the allow is 60kg ...how can u add 60kgs of copper to obtain 80% of copper in it
it will be total 100%
satisfied ??
yes,thanku..!!
welcome!
Similar questions