If - stands for addition, + for division, x for substraction, and `div` stands for multiplication, then which of the following is correct?

Options

A. `25 - 15 + 5 -: 4 xx 16 = 21`
B. `25 + 11 - 4 -: 10 xx 6 = 20`
C. `25 xx 12 - 14 + 4 + 6 = 16`
D. `25 - 12 + 14 :- 2 xx 4 = 15`

Answer

A

Explanation

Option (1)
`25 - 15 + 5 -: 4 xx 16 = 21`
`rArr 25 + 15 -: 5 xx4 - 16 = 21`
`rArr 25+3 xx 4 - 16 = 21`
`rArr 25 + 12 - 16 = 21`
`rArr 37 - 16 = 21`
Option (2)
`25 + 11 + 4 -: 10 xx 6 = 20`
`rArr 25 -: 11 + 4 xx 10 - 6 = 20`
`rArr 25/11 + 40 - 6ne 20`
Option (3)
`25 xx 12 - 14 -: 4 + 6 = 16`
`rArr 25 - 12 + 14 xx 4 -: 6 = 16`
`rArr 25 - 12 + 14 xx 2/3 =16`
`rArr 25 - 12 + 28/3 ne = 16`
Option (4)
`25 - 12 + 14 -: 2 xx 4 = 15`
`rArr 25 + 12 -: 14 xx 2 - 4 = 15`
`rArr 25 + 6/7 xx 2 - 4 ne 15`