IPMAT Rohtak 2020 (QA) PYQs

Veena has to pay Rs. 2460 to Sita, 5 months later at 6% simple interest per annum, and Gita has to pay Sita the same amount at 7.5% simple interest per annum after certain months. If both took the same amount of loan from Sita then Gita paid the loan after how many months?

Bhavani invested an amount of Rs. 13900 divided in two different schemes, A and B at the simple interest rate of 14% per annum and 11% per annum respectively if the total amount of simple interest earned in two year be Rs. 3508, what was the amount invested in Scheme B?