Question

20 women started save money to form a bank.One woman 200 hundred rupees per month.How much will they save after one year?



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Answer 1

⇒400+(n−2)[200+(n−3)20]=11040

⇒(n−2)[200+20n−60]=10640

⇒(n−2)(20n+140)=10640

⇒20(n+7)(n−2)=10640

⇒n

2

+5n−14=532

⇒n

2

+5n−546=0

⇒(n+26)(n−21)=0

⇒n=21

So, total time =21 months.

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