1Arithmetic ProgressionsCompetency Based
A student saves Rs 10 on day 1, Rs 20 on day 2 and Rs 30 on day 3. If this pattern continues, how much will the student save on day 5?
Answer
Rs 50.
Solution
The savings form an AP with a = 10 and d = 10. The 5th term is 10 + 4 x 10 = 50.
