anonymous one year ago Mark simplified three over five divided by five over eight.; his work is shown below. Identify where he made his error. Original division problem: three over five divided by five over eight. Step 1: three over five multiplied by eight over five. Step 2: three times eight over five times five. Step 3: twenty-four over five. Step 4: four and four over five.

1. anonymous

@mathway @King.Void. @welshfella are any of you available to help me?

2. anonymous

$\huge \frac{ \frac{ 3 }{ 5 } }{ \frac{ 5 }{ 8 } }$

3. anonymous

Based on his work, Step 1 is $\huge \frac{ 3 }{ 5 } \times \frac{ 8 }{ 5 }$ Is this correct?

4. anonymous

Yes

5. anonymous

Right, because when you divide, you multiply 3/5 to the reciprocal of 5/8, which is 8/5. :)

6. anonymous

Step 2 is $\huge \frac{ 3 \times 8}{ 5 \times 5 }$ Is this right?

7. anonymous

Yes

8. anonymous

@mathway

9. anonymous

For Step 3, he multiplied$\huge \frac{ 3 \times 8}{ 5 \times 5 }=\frac{ 24 }{ 5 }$. Is this correct?

10. anonymous

yes

11. anonymous

What is 3 x 8?

12. anonymous

What is 5 x 5?

13. anonymous

oh no 3x8= 24 5x5=25

14. anonymous

Yes, so was his Step 3 right or wrong? :)

15. anonymous

wrong

16. anonymous

So you can conclude that he made an error in Step 3. :)

17. anonymous

Yes

18. anonymous

Thank you (;