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if e varies inversely as f and e = 30 when f = 15. what is the value of e when f = 50?
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KUYAENGRIN

In the given problem, apply your knowledge in algebraic expression specially in mathematical operation and solving unknown variables.

Given:

f = 50

e = 30 when f = 15

Problem:

What is e when f = 50?

Solution

The formula for inverse proportion is y = k/x, and in this case the formula is equal to e = k/f

Step 1: Solve for k (constant)

e = 30

f = 15

e = k/f

30 = k/15

k = (30)(15)

k = 450

Step 2: Solve for e when f = 50

e = k/f

k = 450

f = 50

e = 450/50

e = 9

Answer: e = 9

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