Which two signs should be interchanged to make the given equation correct? 28 + 12 - 21 + 7 x 4 = 60

SSC GD Constable Exam Questions

Question:

Which two signs should be interchanged to make the given equation correct?

28 + 12 - 21 ÷ 7 x 4 = 60

Options:

1.  x and -
2.  + and ÷
3.  x and +
4.  x and +

Answer:

Option 1: x and -

Explanation:

Let's analyze the given equation:

28 + 12 - 21 ÷ 7 x 4 = 60

Currently, the equation is incorrect. To make it correct, we need to interchange the x and - signs.

So, the correct equation would be:

28 + 12 x 21 ÷ 7 - 4 = 60

Now, let's solve the equation:

28 + 252 ÷ 7 - 4 = 60

28 + 36 - 3 = 60

63 - 3 = 60

So, after interchanging the signs, the equation equal 60. Hence, Option 1 is Correct.