In the following proportion, what does y equal?
2 answers:
Answer:
4 30
Cross multiply:
Y * 30 = 4 * 39
Simplifying
Y * 30 = 4 * 39
Reorder the terms for easier multiplication:
30Y = 4 * 39
Multiply 4 * 39
30Y = 156
Solving
30Y = 156
Move all terms containing Y to the left, all other terms to the right.
Divide each side by '30'.
Y = 5.2
Simplifying
Y = 5.2
Y/4 = 39/30
Cross multiply:
30y = (4 x 39)
30y = 156
Divide both sides by 30:
Y = 156/30
Y = 5.2
The answer is C. 5.2
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