CAN YOU HELP ME PLEASE

Question

You mix 3L of 20% acid solution with 2L of 70% solution of the same acid. What will be the final concentration?

(concentration = amount of pure substance/total amount of solution)

submit the answer as a decimal with two decimal places. For example 4.00 or 5.31etc.

Answer 1

20% of 3=0.2*3=0.6 L of acid

70% of 2=0.7*2=1.4 L of acid

1.4+0.6=2 L of acid

3L+2L=5L total amount of solution

2/5=40/100=40% acid solution