Answer:
10 kg
Step-by-step explanation:
In 3% concentration of 20 kg of seawater, there will be
kg of salt.
So, if it is a 2% solution of seawater,
Then 2 kg salt will be there in 100 kg solution.
So, 0.6 kg salt will be there in
kg of solution.
So, to make a solution from 3% to 2% we have to add (30 - 20) = 10 kg of water with a 20 kg solution. (Answer)
Clara forgot to distribute the - sign to- (2b-r) through all the terms the answer would be 6b+3r
Answer:
(y + z)(y + 4z)
Step-by-step explanation:

Answer:
( 7e + f ) - 25 = total
Step-by-step explanation:
(Emma + Frank) - Coupon = TOTAL
( 7e. + f ) - 25 = TOTAL
Answer:
I think A
Step-by-step explanation:
srry if wrong
i hope this helps tho