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if 1000w per one hour cost $0.20 then how much would 150w cost per one hour?

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Type: Question • Score: 6 • Views: 1,744 • Replies: 25

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@QTZable2know,

Well, can you tell me how much 1 Watt costs per hour?

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@QTZable2know,

(150/1000) x $0.20

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@fresco,

Fresco,

Doing some kids homework for them is really not a good thing. The poster isn't going to learning anything from your answer.

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@maxdancona,

Point taken, but...the general "unitary method" which you propose is specifically not appropriate in the case of electricity which is measured in price per kw-hr (THE pricing "unit"). We can assume that the student involved with utility prices has moved on in arithmetic from the "unitary method" to "direct proportion" of the form x: $0.20 as 150:1000.

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Uhm . . . this would be math, n'est-ce pas? Not science . . .

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@Setanta,

Watts your point?

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Don't give me no static . . .

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@fresco,

I disagree. There is a big problem in education where kids learn these "plug in the numbers and turn the crank" method without thinking about them. Since this poster didn't even know how the turn the crank method, it seems obvious to me that a more thoughtful, conceptual approach is appropriate (not that mine is the only one).

Consider this question...

King Henry the eighth had six wives, how many wives did King Henry the sixth have?

It is amazing how many kids will come up with a ration to "solve" this problem.

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@maxdancona,

He had one . . . and man, was she ever a bitch!

1 Reply

@Setanta,

Uhm . . . this would be history, n'est-ce pas? Not science . . .

1 Reply

It's history now, but a few years ago it would have been fodder for the gossips.

Joe(Who's going to read "That Woman"?)Nation

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@maxdancona,

maxdancona wrote:

Uhm . . . this would be history, n'est-ce pas? Not science . . .

Well, it's not a current event, which is what the OP was asking about.

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@chai2,

Chai should get a red ribbon for that.

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@chai2,

A shocking state of affairs . . .

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@QTZable2know,

QTZable2know wrote:

if 1000w per one hour cost $0.20 then how much would 150w cost per one hour?

150w costs me nothing.

Go solar and reduce your homework at the same time.

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@maxdancona,

Okay. How would you teach me to do this one ? Its an arithmetic question normally asked (in the UK at least) at the age when a student learns about electrical power.

If it takes 12 men, 10 days to paint 4 houses, how long would it take 5 men to paint 3 houses ?

Note that the unitary method (taught at around age 11 when a child is still picturing items on shopping lists etc) does not work.

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@fresco,

Quote:

If it takes 12 men, 10 days to paint 4 houses, how long would it take 5 men to paint 3 houses ?

SEXIST !! Why cant women paint houses ?

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@Ionus,

...its like the Olympics....gender testing operates. Wink

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@Ionus,

18 days----

women don't do exterior paint jobs---mexicans do.

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