A washing machine is available for Rs. 13,500 cash or Rs. 6,500 as cash down payment followed by three monthly instalments of Rs. 2,500 each. Find the rate of interest charged under instalment plan.

A computer is available for Rs 39000 cash or Rs 17000 as cash down payment followed by five monthly instalments of Rs 4800 each. What is the rate of interest under the instalment plan? (a) 35.71% p.a. (b) 36.71. p.a. (c) 37.71% p.a. (d) 38.71% p.a.

A ceiling fan is marked Rs.1940 cash or for Rs.420 cash down payment followed by three equal monthly instalments.If the rate of interest charged under the instalment plan is 16% per annum,find the monthly instalment.

A television set is sold for Rs. 9000 cash on Rs.1000 cash down followed by six equal instalments of Rs.1500 each. What is the rate of interest ?

Abhinav purchases a track suit for ₹ 2400 cash or for ₹ 1000 cash down payments and two monthly instalments of ₹ 800 each. Find the rate of interest: