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7 years, 7 months ago
a man borrows rs.1000 and agrees to repay it with a total interest of rs.140 in 12 installments,each installment being less than the one preceding it by rs. 10. what shoukd be his first installment.
7 years, 7 months ago
suppose x is the initial installment so the next will b x-10,x-20, x-30 and so on upto x-110
and the
total amt paid will be 1000+140=1140
so
(x+x-10+x-20+x-30+........x-110) =1140
12x-660=1140
12x=1800
x=150
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