Home
Class 10
MATHS
Ramkali saved Rs 5 in the first week of ...

Ramkali saved Rs 5 in the first week of a year and then increased her weekly savings by Rs 1.75. If in the nth week, her weekly savings become Rs 20.75, find n.

Text Solution

Verified by Experts

Ramkali saved ₹ 5 in the first week of a year and then increased her weekly saving by ₹ 1.75. If in the nth week, her weekly savings become ₹ 20.75,
`a_n = a + (n - 1)d` is the nth term of AP.
Here, a is the first term, d is a common difference and n is the number of terms.
From the given data, Ramkali’s savings in the consecutive weeks are `₹ 5, ₹ (5 + 1.75), ₹ (5 + 2 × 1.75), ₹ (5 + 3 × 1.75) ...` and so on ...
Promotional Banner

Similar Questions

Explore conceptually related problems

In a new year, Reenu saved Rs. 50 in the first week and then increased her weekly savings by Rs 17.50. If in the nth week, her weekly saving becomes RS. 207.50, find the value of n.

Jasleen saved Rs 5 in the first week of the year and then increased her weekly savings by Rs 1.75 each week.In what week will her weekly savings be Rs 20.75?

Ramkali 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 fulfil her dream of sending her daughter to school?

Ramkali required Rs 2500 after 12 weeks to send her daughter to school. She saved Rs100 in first week and increased her weekly savings by Rs 20 every week. Find whether she will be able to send her daughter to school after 12 weeks. What value is generated in the above situation?

A man saves Rs.32 during the first year,Rs.36 in the second year and in this ay be increases his savings by Rs.4 every year.Find the in what time his saving will be Rs.200 .

The ratio of income to savings of a family is 11:2. Find the expenditure if the savings is Rs 1520

Vinod saves Rs 1600 during the first year , Rs 2100 in the second year , Rs 2600 in the third year .If he continues his savings in this pattern , in how many years will he save Rs 38500 ?

A man is saves Rs 400 more each year than he did the year before . If he saves Rs 2000 in the first year then in how many years will his saving be Rs 97200 altogether ?