Ram kali would need Rs.1800 for admission fee and books etc., for her daughter to start going to school from next year. She saved Rs.50 in the first month of this year and increased her monthly saving by Rs.20. After a year, how much money will she save? Will she be able to fulfill her dream of sending her daughter to school?
[CBSE2005,2014]
a = 50, d = 20
an = a + (n – 1) d = l
a12 = 50 + 11 * 20 = 270
Sn = 
[a + l]
= 
[50 + 270]
= 12 * 160 = 1920
Yes, she will be able to fulfill her dream of sending her daughter to school.
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