Given:
Investment of A, B and C together = Rs. 47,000
Investment of A = Investment of B + Rs. 7,000
Investment of B = Investment of C + Rs. 5,000
Total profit of A, B and C together = Rs. 4700
Concept used:
Profit = Amount×Time
Calculation:
Let the investment of C be x.
B's investment = x + 5000
A's investment = x + 5000 + 7000
(A + B + C)'s investment = 47000
⇒ x + x + 5000 + x + 5000 + 7000 = 47000
⇒ 3x + 17000 = 47000
⇒ 3x = 47000 – 17000
⇒ 3x = 30000
⇒x=330000
⇒ x = 10000
A's investment = 10000 + 12000 = 22000
B's investment = 10000 + 5000 = 15000
C's investment = 10000
Ratio of investment of A, B and C = 22000 : 15000 : 10000
⇒ 22 : 15 : 10
Share of C = 4710×4700
⇒ 10×100
⇒ 1000
∴ The correct answer is Rs 1000 which is the share of C.