NCERT Solutions for Class 8 Mathematics Chapter 8
Important NCERT Questions
Comparing Quantities Chapter 8 Exercise 8.3
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 1 Part: 4
Calculate the amount and compound interest on: ₹ 8,000 for 1 year at 9% per annum compounded half yearly. (You could the year by year calculation using S.I. formula to verify).
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Here,
Principal (P) = ₹ 8000,
Time (n) = 1 years = 2 half-years(compounded half yearly)
Rate of interest (R) = 9% = (9/2)% (compounded half yearly)
Amount (A) = P (1+R/100)ⁿ = 8000(1+9/2×100)² = 8000(1+9/200)²
= 8000(209/200)² = 8000 x 209/200 x 209/200 = ₹ 8,736.20
Compound Interest (C.I.) = A – P = ₹ 8736.20 – ₹ 8000 = ₹ 736.20
Class 8 Maths Chapter 8 Exercise 8.3 Solution in Video
for more answers vist to:
https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-9/