Mathematics
NULL
Medium
Question
Nabeela borrowed Rs 1200 at simple interest for as many years as the rate percent. She paid Rs 432 as interest. What was the rate?
A
3.6
B
6
✓ Official correct answer
C
18
D
Cannot be determined
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
3.6
No member explanations yet for this option.
B
6
No member explanations yet for this option.
C
18
No member explanations yet for this option.
D
Cannot be determined
No member explanations yet for this option.
Explanation
SI = P r r / 100 = 432 ⇒ 1200 r² / 100 = 432 ⇒ r² = 36 ⇒ r = 6.