Question
The simple interest on a sum of money for 4 years at 8%
per annum is ₹1,280. What will be the compound interest on the same sum at the same rate of interest for 2 years, compounded annually?Solution
Simple interest for 4 years = ₹1,280 Simple interest for 1 year = ₹1,280 ÷ 4 = ₹320 Principal = (Simple interest × 100) ÷ (Rate × Time) = (320 × 100) ÷ (8 × 1) = ₹4,000 For compound interest: A = P(1 + r/100)^t A = 4000(1 + 8/100)^2 = 4000(1.08)^2 = 4000 × 1.1664 = ₹4,665.6 Compound interest = A - P = ₹4,665.6 - ₹4,000 = ₹665.6 ≈ ₹666 Correct Option: b) ₹666
Determine the simplified value of the expression: 12 × 15 - 20 + 15 + 12 - 18 + 3 × 4 + 18.
12.5% of 45 % of 480 + 957/29 = ? -14 × 15
22 + 60 × 3 ÷ 12 = ?
(√121 + √196) × 7 =? × 5
Solve the following:
240 ÷ 4 × 512 ÷ 8
45% of 360 - 160 + ? = √324
[192 ÷ 6 × 5] ÷ (? + 3) = 20
What will come in place of (?) in the given expression.
{(60% of 250) + √144} ÷ (3² - 4) = ?1.25 × 36 + 2.75 × 40 = ? × 3.1
60 % of 640 - 57 × 2 - 1520 / 38 = ?
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