1 2/5 divided by 21

Which is correct?

A. 21/1 x 5/7 = 105/7 =15

or

B. 1/21 x 7/5 = 7/105 / 7/7 = 1/15

Neither is correct. The answer is (2/5)/21 = 2/(5*21) = 2/105. Are you sure you copied the problem correctly?

1 2/5 divided by 21

sorry. I missed the "1" out front.

The answer is (7/5)/21 = 7/105

So, the answer is 15 or 1/5?

7/105 = 1/15

That is what I got.Good job DUDE.

I agree with drwis.... Are you sure you copied the problem correctly?

P.S. --- Is this your homework??

It seems that there was some confusion in the initial question. Let's clarify the problem:

The original question was "1 2/5 divided by 21."

To solve this problem, we need to convert the mixed number 1 2/5 to an improper fraction.

To do this, we multiply the whole number (1) by the denominator of the fraction (5) and add the numerator (2). This gives us (1 * 5 + 2 = 7) as the new numerator. The denominator remains the same, which is 5.

So 1 2/5 is equivalent to 7/5.

Now, let's divide this by 21.

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction.

So, (7/5) ÷ 21 is the same as (7/5) * (1/21).

To multiply fractions, we multiply the numerators together and the denominators together.

Multiplying, we get (7 * 1)/(5 * 21), which simplifies to 7/105.

Therefore, the correct answer to the problem "1 2/5 divided by 21" is 7/105.