Using statement 1
T1 = X/50
T2 = (530 - X)/60
T1 + T2 = 10
So X/50 + (530 - X)/60 = 10
Solve for X
Statement 2 does not tell you anything about the distances.
Hence A
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GMATPrep Q9
Source: Beat The GMAT — Data Sufficiency |
Let T = total distance.
Stmt1:
x/50 + (T -x)/60 = H hours
Here H = 10, T = 530.
plugging these
x/50 + (530 -x)/60 = 10.
This is a linear equation with 1 var.
1 eqn and 1 var..so Can be solved.
sufficient.
Stmt2:
x/50 - (T-x)/60 = 4.
Still have 2 vars and 1 eqn. So insufficient
Answer is A
HT Helps
Stmt1:
x/50 + (T -x)/60 = H hours
Here H = 10, T = 530.
plugging these
x/50 + (530 -x)/60 = 10.
This is a linear equation with 1 var.
1 eqn and 1 var..so Can be solved.
sufficient.
Stmt2:
x/50 - (T-x)/60 = 4.
Still have 2 vars and 1 eqn. So insufficient
Answer is A
HT Helps
