Test Mode
Reading Mode
Right = 0
Wrong = 0
(X+Y)/(N+1)
(NX+Y)/(N+1)
{N(X+Y)} /(N+1)
{N(X+Y)-1}/N
{(N+1) (X+Y)} /(N+1)
11 years and 5 months
12 years and 5 months
13 years and 6 months
11 years and 3 months
10 years and 7 months
100%
94%
84%
96%
None of these
21
19
17
14
None of these
351.8 miles
360.72 miles
413.6 miles
286.9 miles
None of these