Some equations have been solved on the basis of certain system, Find the correct answer for the unsolved equation on that basis.
If `98 - 39 - 27 = 31, 87 - 38 - 34 = 20,` 'then `79 - 25 - 12 = ?`

Options

A. 51
B. 22
C. 42
D. 15

Answer

B

Explanation

`98-39-27=31`
`implies(9xx8)-(3xx9+2xx7)=31`
`implies72-(27+14)=31`
`implies72-41=31`
`87-38-34=20`
`implies(8xx7)-(3xx8+3xx4)=20`
`implies56-(24+12)=20`
`implies56-36=20`
`79-25-12=?`
`implies?=(7xx9)-(2xx5+1xx2)`
`implies?=63-(10+2)`
`implies?=63-12=51`