If 332 – 172 = 25k, what is the value of k?

If 33² – 17² = 25k, what is the value of k?

A 142/25

B 20

C 162/25

D 32

Correct Answer: Option D

332 – 172 = 25k

=> (33 + 17 ) (33 - 17) = 25k

=> 50*16 = 25k

=> k = 50*16/25 =32