9 km/hr=
9000m/hr=
9000m/60mins=
9000m/3600seconds=
30m/12seconds=
10m/4seconds=
5m/2seconds
2.5m/1second
.108 I hope that this helps
Answer: Three quarters (30 ml) is made up of a 36% acid solution.
Step-by-step explanation:
Since we have given that
Total amount of solution = 40 ml
One- quarter of the solution is given by

Three-quarter of the solution is given by

According to question, we have
10 ml of solution is made up of = 20% of acid solution
30 ml of solution is made up of = say<em> 'c </em>' of acid solution
40 ml of solution is made up of = 32 % of acid solution
So, our equation becomes,

Hence, three quarters (30 ml) is made up of a 36% acid solution.
Answer:
Step-by-step explanation:
27x - 45 - 4x + 9
23x - 36