Question

Tino evaluates the expression 3 = . His work is shown below.Step 1: 3 - 5Step 2: 3.5Step 3: 3:4Step 4:35Tino made an error in evaluating the expression. Select the step where the first error is made, along with thecorrect error explanation.

Answer 1

We have

$\frac{3}{7}\div\frac{4}{5}$

Step 1

$\frac{3}{7}\div\frac{4}{5}$

Step 2

$\frac{3}{7}\cdot\frac{5}{4}$

Step 3

$\frac{3\cdot5}{7\cdot4}$

Step 4

$\frac{15}{28}$

As we can see the error was in Step 3, therefore the correct answer is D.