Please help with Algebra question

It is a multiple answer question.

Three soldiers washed 98 windows of the barracks.  Two of the soldiers
washed the same number of windows.  The third soldier washed 5 more
windows than either of the other soldiers.  How many windows were
washed by the soldier who washed the most windows?

a) 54    b) 49    c) 36    d) 31

I do not know the equation to get the answer.  please show me.  Thank
you.