1)

Shyam lent Rs. 600 for 2 years and Rs. 200 for 3 years, at the same rate at simple interest, and received Rs. 90 as total interest. What was the rate % p.a. ?


A) 12%

B) 5%

C) 6%

D) 4%

E) None

Answer:

Option B

Explanation:

Total SI =P1T1R100 +P2T2R100

R = rate % which is the same in both cases.

600×2×R100 +200×3×R100 =90

12R+6R =90 18R=90 R = 5%