A biology teacher has 15 milliliters of a salt solution that is 65% salt. How many milliliters of water must the teacher add to
make a solution that is 25% salt?
1 answer:
Assuming that water has 0% salt and that the amount of water added is x ml;
(15+x)*25 = (15+0)*65 = 975
375+25x = 975
25x = 975-375 = 600
x = 600/25 = 24 ml
The teacher must add 24 ml of water.
You might be interested in
Answer:
b
Step-by-step explanation:
105 - 32 = 73
Answer:
22/25
Step-by-step explanation:
66/75 = 22/25
Input into equation to confirm
75 · 22/25 = 66
1650/25 = 66
66 = 66, so we're right
Answer:
C
Step-by-step explanation:
Parallel line slopes are always the same.
Answer:
i think its 10
Step-by-step explanation:
4 6 8 10 15 20 21
