. A sum of Rs 700 is to be used to give seven cash prizes to students of a school for theiroverall academic performance
If each prize is Rs 20 less than its preceding prize, find thevalue of each of the prizes.
Best Answer
Solution:Here; d = 20 n = 7 and Sn = 700
Now,
700 = 7(a + 60)
100 = a + 60
a= 40
Hence, the prizes in ascending order are:
Rs. 40, Rs. 60, Rs. 80, Rs. 100, Rs. 120, Rs. 140 and Rs. 160
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