Question

Ram kal required rupees 2500 after 12 years to send her daughter to school she is saved rupees 100 in the first week and increase the weekly saving by rupees 20 every week find whether she will be able to send her daughter to school after 12 weeks​

Answer 1

$S_{n}$=2500

n=12,a=100,d=20

$S_{n}$=n/2[2a+(n-1)d]

2500=12/2[2*100+(12-1)20]

2500=6[200+220]

2500=6*2520

yes he can send his daughter to school

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