Question

a sum of rs 3900is paid off in 12 installments each installment rs 10 more than preceding one find amount of first and last installment​

Answer 1

Answer:

The first installment = Rs. 275

The last installment = = Rs 385

Step-by-step explanation:

The total amount to be refunded in 12 instalments: 3900

Condition of the instalments : Each instalment is 10 more than the previous one

Let the first instalment be x,

Therefore, we can frame the equation:

x + x+10 + x+20 ..... x+110 = 3900

or, 12x + 660 = 3900

or, 12x = 3900-660

or, x = 3300/12 = 275

Therefore, the first installment = Rs. 275

And, the last installment = Rs ( 275 + 110 ) = Rs 385