CBSE Class 10 Maths (Standard) 2025 · Paper 30(B) · Question 36

Arithmetic Progressions 4 marks Medium

To inculcate the good habit of savings in her children, Reema brought a piggy bank and after putting a

₹ 10

coin in it, she handed it over to her daughter Amisha and asked as to put money in it from her pocket money at the beginning of every week. Amisha put two ten rupee coins at the beginning of next (second) week and in this way increases her savings by one

₹ 10

coin every week. Based on the above, answer the following questions.

(a)How many coins were added in the piggy bank at the beginning of $5^{t h}$ week?[1]
(b)How many $₹ 10$ coins will be there in the piggy bank after the end of $7$ weeks?[1]
(c)(i)If the piggy bank can hold a maximum of $300 ₹ 10$ coins, after how many weeks it would be full?[2]
(c)(ii)OR — Find the total amount of money in the piggy bank at the end of $20$ weeks.[2]

Answer

(a)

5

coins were added at the beginning of the fifth week; (b) There will be

28

coins after the end of

7

weeks; (c)(i) The piggy bank will be full after

24

weeks; (c)(ii) It will hold ₹

2100

at the end of

20

weeks.

🔒 Step-by-step solution

From the board paper

CBSE Class 10 Maths (Standard) 2025 · Paper 30(B), Question 36 — all 38 questions with answers →

CBSE Class 10 Maths (Standard) 2025 · Paper 30(B) · Question 36

Answer

From the board paper

More questions from Arithmetic Progressions