Arvind invests two sum of money A and B at 10% p.a. and 20% p.a respectively at Cl for 2 years. The total sum of A and B was Rs. 40,000 and the total interest on both the sum was Rs. 17140 How much amount was received by investing money A alone ? 1. Rs. 2560 2. Rs. 3600 3. Rs. 2440 4. Rs. 2520 Rs. 2420 5.