Final answer:
The solution to the first proportion 26/z = 13/22 is z = 44, which is option (a). However, for the second proportion b/30 = 2.6/1.5, the answer is b = 52, which is not listed as an option, suggesting there is a mistake in the question.
Step-by-step explanation:
To solve the proportion 26/z = 13/22, we cross-multiply to find the value of z. This gives us:
26 x 22 = 13 x z
572 = 13z
Now we divide both sides by 13 to isolate z:
z = 572 / 13
z = 44
So the correct answer is z = 44, which corresponds to option (a).
Next, we solve the second proportion b/30 = 2.6/1.5. Again, we cross-multiply:
b x 1.5 = 2.6 x 30
1.5b = 78
Now, divide both sides by 1.5 to solve for b:
b = 78 / 1.5
b = 52
Since 52 is not listed as an option, we must turn down this question as having a mistake or typo in the provided options.