Solution:
Let the volume (in litres) of acids used be:
x1=amount of 25% acid
x2=amount of 40% acid
x3=3*x2=amount of 60% acid
2.5 hours, because 10 miles an hour times 2 = 20 plus half the time? 2.5
I think the answer is 6.6
Answer:
6.7
Step-by-step explanation:
