Question

Pedro simplified four over seven divided by five over eight.; his work is shown below. Identify where he made his error. Original division problem: four over seven divided by five over eight.
Step 1: four over seven multiplied by eight over five.
Step 2: four times five over seven times eight.
Step 3: twenty over fifty-six.
Step 4: five over fourteen.

Answer 1

Solve the problem yourself first, to see if Pedro made any mistakes.

4/7 x 8/5
4x8 = 32
7x5 = 35

32/35 is the answer. 

Pedro made his error in step 2, he cross multiplied instead of multiplying the numerators, and then the denominators.