Sayed gave an answer of 6 6/7 for the problem 4 2/7 x 1 3/5. using estimates, is this a reasonable answer?

His estimation is correct

Explanation:
First, we will convert the mixed number to fractions as follows:
4 = [(7*4)+2] / 7 =

1 = [(5*1)+3] / 5 =

Then, we will do the multiplication as follows:
*
 =
 =
 =

Finally, converting the into a mixed number, we will find that it is equivalent to 6

Hope this helps :)