The answer is 69, because 15% of 460 is 69
Hope this helps!
First off, let's convert the percentages to decimal format, so our 77% turns to 77/100 or 0.77, and our 55% turns to 55/100 or 0.55 and so on
now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%
anyway thus

solve for "x"
9.2 i think you have to round it up and it’s 9.5
Answer:28 should be it
Step-by-step explanation: