Which two signs should be interchanged in the following equation to make it correct?
`15 – 9 div 6 xx 10 + 5 = 25`

Options

A. `+ and div`
B. `xx and -`
C. `+ and -`
D. `xx and div`

Answer

C

Explanation

`15 - 9 div 6 xx 10 + 5 = 25`
According to the question,
If we interchange the + and – sign the above equation become correct.
`15 + 9 div 6 xx 10 - 5`
` implies 15 + 15 – 5`
`implies 30 - 5 implies 25`
Hence, option (c) is the correct answer.