Welcome to the LEAP Q&A Forum

Find your questions answered. Here.

GMAT - Data Sufficiency - Algebra

If n + k = m, what is the value of k ?

If n k = m, what is the value of k ?

(1) n = 10
(2) m 10 = n

(1) n = 10

given n + k = m

=> 10 + k = m

=> k = m - 10

k is dependent on the value of m

Insufficient

(2) m + 10 = n

given n + k = m

adding 10 to both sides

n + k + 10 = m + 10

since m + 10 = n

n + k + 10 = n

k = -10

Sufficient