Question

Mr.Masood borrows Rs.9000 with the condition that he will return it in installments successively decreasing by Rs.20.If the first installment is Rs.640.In how many installments the loan will be paid back?

Answer 1

1st month 640 ,2nd month 620, 3rd month 600 4month -580, 5month 560 , 6 month 540, 7 month 520 ,8 month 500, 9 month 480 10 th month 460 11 month 440 ,12 month 420 13 month 400 14 month 380 15 month 360 16 month 340 17 month 320 18 month 300 19 month 280 20 th month 21 month 160

Step-by-step explanation:

so we have to add all amounts so we get Rs.9000

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