I know this is a basic question, But i really don't under stand how to get the cents ,....

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- Feb 12th 2011, 05:31 AMvaironxxrdThe price of Apples SAT
I know this is a basic question, But i really don't under stand how to get the cents ,....

http://img844.imageshack.us/img844/3...tpractice2.jpg

Uploaded with ImageShack.us - Feb 12th 2011, 05:35 AMProve It
It should be clear that if 1lb is 6 apples, then 2lbs is 12 apples...

10lbs : $d

1lb : $d/10

2lb : $d/5 = d/5 x 100c = 20d c. - Feb 12th 2011, 05:38 AMvaironxxrd
- Feb 12th 2011, 05:41 AMCalye
The answer should be A.

See if 1 pound is 6 apples.

2 pound is 12 apples.

Knowing that 10 pound equals to d.

To get 2 pounds, we need to divide d by 5= d/5.

After this, we know that d is in dollars not in cents.

So we multiply d/5 by 100.

We should get 20d. - Feb 12th 2011, 05:49 AMvaironxxrd
- Feb 12th 2011, 05:53 AMUnknown008
Hm... let me try this:

10 lbs <=> 60 apples <=> $ d

(where <=> means equivalent. Since 1 lbs <=> 6 apples, 10 lbs <=> 60 apples)

You want 12 apples, so divide everywhere by 5 to get:

2 lbs <=> 12 apples <=> $ d/5

Then, just convert this into cents by multiplying by 100. - Feb 12th 2011, 06:01 AMvaironxxrd
- Feb 12th 2011, 06:01 AMCalye
No i didn't mean that.

What i meant was DIVIDE D BY 5 WHICH EQUALS TO D/5 - Feb 12th 2011, 06:02 AMCalye
d/5 x100 is not equals to 500.

it's 100d/5.

When divided, you get 20d. - Feb 12th 2011, 06:04 AMUnknown008
- Feb 12th 2011, 09:45 AMDrSteve
At this stage you should do this problem by the technique of

**picking numbers**.

Let's choose a value for d, how about d=10, so that 10 pounds of apples is 10 dollars. Thus the apples cost 1 dollar per pound. So it's 1 dollar for 6 apples, and therefore 2 dollars for 12 apples. 2 dollars is equal to**200**cents. Put a nice big circle around the number**200**. That's the answer you want to get.

Now, since we chose d=10, we substitute 10 in for d in each answer choice and use our calculator. We get the following:

(A) 200

(B) approximately 166.67

(C) 50

(D) approximately 16.67

(E) .5

Since (A) is the only answer that came out to 200, the answer is choice (A).

**Important Remark:**The answer is not (A) because (A) came out correct. The answer is (A) because the other 4 choices did**not**come out correct. You must try all 5 choices before selecting your answer. - Feb 12th 2011, 11:12 AMvaironxxrd