Kiran saves money each day. On day 1 she saves Rs 5, on day 2 Rs 8, on day 3 Rs 11 and so on.
Her savings form an AP. What total amount has she saved by the end of day 20?

Question

Kiran saves money each day. On day 1 she saves Rs 5, on day 2 Rs 8, on day 3 Rs 11 and so on. Her savings form an AP. What total amount has she saved by the end of day 20?

Accepted Answer

Rs 670. a = 5, d = 3, n = 20. S20 = 20/2 [2(5) + 19(3)] = 10(10 + 57) = 10(67) = Rs 670.

Kiran saves money each day. On day 1 she saves Rs 5, on day 2 Rs 8, on day 3 Rs 11 and so on.
Her savings form an AP. What total amount has she saved by the end of day 20?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 AP Word Problems practice

Kiran saves money each day. On day 1 she saves Rs 5, on day 2 Rs 8, on day 3 Rs 11 and so on.Her savings form an AP. What total amount has she saved by the end of day 20?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 AP Word Problems practice

Kiran saves money each day. On day 1 she saves Rs 5, on day 2 Rs 8, on day 3 Rs 11 and so on.
Her savings form an AP. What total amount has she saved by the end of day 20?