In the following proportion, what does z equal?
3/7 = 15/z
2 answers:
Answer:
yes Z= 35
Step-by-step explanation:
3 = 15
7 = z
Cross multiply:
3 * z = 7 * 15
Simplifying
3 * z = 7 * 15
Multiply 7 * 15
3z = 105
Solving
3z = 105
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Divide each side by '3'.
z = 35
Simplifying
z = 35
3/7 = 15/z
using cross products
3z = 7*15
3z = 105
divide by 3
z = 35
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Let, the price of jacket before tax = x
it would be: x*105/100 = 118.65
x = 11865/105
x = $113
