A. 3
B. 7
C. 10
D. 15
– The person has 6 rupees.
– His friend has 4 rupees.
– Add these amounts together: 6 + 4 = 10 rupees.
D. 2. The combined amount of money that the person and his friend have is 10 rupees.
Therefore, when the person and his friend’s money is combined, they have 10 rupees.