# Thread: Please explain

1. Good post? |

## Please explain

1. The perimeter of a rectangle desktop is 10 ft. It's length is 1 foot greater than its width.

The area of the desktop 5 sq ft
Ans: (A)

2.
Col A Col B
The product of integers between 0
-10 and -1 inclusive

Ans: (A) I got this right but I am not sure if I had the right formula.

This is how I did it: -10 X -1 + 1 = 11. Thus, 11 is > than 0. So A was my answer. Is that correct?

3.
q > 1
0 < p < 1

Col A Col B

q q/p

Ans: (B)

Thank you for your help.

2. Good post? |
1.

The length is greater than the width by 1 foot. Hence, 2(width +1 + width) = 10.
Therefore, width = 2 and length = 3. hence, the area of the desktop is 3*2 = 6. And so, column A is greater.

2.

Well, you just need to know that there are 10 integers between -10 and -1. The product of an even number of integers with the same sign is always positive. Hence, column A is greater. You do not need to actually carry out the multiplication.

3.

Since q is positive, we cancel it from either side. Now, we compare 1 and 1/p. Since 0<p<1, 1/p is obviously greater. hence, column B is greater.

3. Good post? |
Goldust, thank you--now, I understand.

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