pls answer urgently
I'll I'll u as brainliest
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Answer:
6) 48 month
7) 30°
this is your answer okkk
Answered by
1
Step-by-step explanation:
R=9
Interest amount=Rs1764
Money deposited =Monthly value x number of months
=200×n=
Rs 200 n
Now principal for one month =200×n(n+1)/2
=200n^2+ 100n
Interest will be =Principal for one month x R /×100
. 1764=100n^2+100n)×9/1200
. 1767=0.75n^2 +0.75n
We have n= -b + - √b^2 -4ac /2a
= -0.75+-√0.5625+5301/1.5
=72.06/1.5
=48.04 months
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