Question

Nitya has to send her daughter to school after 12 weeks she requires rupees 3150 she save rupees 100 in first week and then increase her weekly savings by 30​

Answer 1

let the given question in ap.

a=100

b=100+30

  =130

till week 12==

s12= 12/2 x (2x100 + (12-1)x 30)

    = 6 x (100+330)

    = 2580 is the answer

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if it helps.....

Answer 2

Answer:

The answer is Rupees 3180

Step-by-step explanation:

a=100

b=30

n=12

Formula for the sum of AP,

S=n/2{2a+(n-1)d}

Now we put the values.

=12/2{2*100+(11)30}

=6{200+330}

=6*530

=3180

Therefore She saved rupees 3180, and yes it is enough to send her daughter to school.

Hope it helps, please mark as brainliest if it helps.

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