Question

x varies directly with y and z.
x = 1200 when y = 20 and z = 30.
Find x when y = 10 and z = 20.

Answer 1

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Answer 2

can you help me out

Answer 3

If I'm not mistaken, the equation for this is: x=kyz

Answer 4

yes ur correct

Answer 5

Okay, so plug in the first set of values

Answer 6

how is the so is it 1200=k(20)(30)

Answer 7

Now solve for k

Answer 8

is 20

Answer 9

20 or 2?

Answer 10

2

Answer 11

Good, now that you have k, plug in the second set of values and you are done good sir :)

Answer 12

x=2(10)(20)

Answer 13

Yup!

Answer 14

400

Answer 15

Congrats, you have found your answer.

Answer 16

And yes, it is that easy :)