Ramu borrowed Rs35000 from Somu. A part of the sum is borrowed at 10% per annum under simple interest for 4 years and the remaining part at 11% per annum under simple interest for `(4)1/2` years. If the total interest earned by Somu is Rs15900, then find the sum borrowed at each rate.

Ramu borrowed Rs35000from Somu.A part of the sum is borrowed at 10% per annum under simple interest for 4years and the remaining part at 11% per annum under simple interest for (4) (1)/(2) years.If the total interest earned by Somu is Rs15900,then find the sum borrowed at each rate.

Raju borrowed Rs 15,000 from Mahesh at the rate of 15% per annum under simple interest for 3 years. Raju lent some part of money at 20% per annum at simple interest for 3 years and the remaining part at 12% per annum at simple interest for 3 years. If the interest received payable, then find the sum he lent at 20% simple interest?

A sum amounts to Rs. 3600 at 2% per annum under simple interest and Rs. 4800 at 4% per annum under simple interest. The time taken is ___.

A certain sum becomes Rs. 2400 in 10 years at the rate of 2% per annum under simple interest. Find the sum.