Correct Answer - Option 1 : 21 : 20

**Calculation:**

**Let m and n are the investments by Amal and Bimal**

**Interest amount received by amal after 2 years = m × (r/100) × t**

⇒ I = m × (10/100) × 2

⇒ I = 0.2m ---(1)

**Interest amount received by Bimal after 2 years = n ( 1 + (r/100))**^{t }- n

⇒ I = n × ( 1 + (10/100))^{2} - n

⇒ I = 1.1^{2}n - n

⇒ I = 0.21n ---(2)

**(1) = (2)**

⇒ 0.2m = 0.21n

⇒ **m/n = 21/20**

Make sure which amounts are equal, whether it is the total amount or the interest amount.