Profit, Loss & Interest

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All Cost & Selling Price Profit & Loss 52 Discount 4 Simple Interest 1 Compound Interest 2
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Q1.Trees in forest diminish 6% every four year. trees in 2015 :14000. Than formula for number of trees? If P is number of trees after t years?

Medium
A P = 14000 * (0.94)^(t4)
B P = 14000 * (0.94)^(t/4)
C P = 14000 * (0.94)^(4/t)
D P = 14000 * (0.06)^(t/4)
Compound Interest PPSC 2026

Correct Answer: B

With a 6% decrease every 4 years, the formula is P = 14000 × (0.94)^(t/4).

Q2.Compound interest rate of 6% p.a. is given for the investment of Rs. 42,000 for 10 years. What is the amount at the end of the term if interest is added half-yearly?

Medium
A Rs. 54,687.3
B Rs. 63,279.4
C Rs. 75,856.7
D None of these
Compound Interest PPSC

Correct Answer: C

Formula: A = P(1 + r/n)^(n*t). Here P = 42,000, r = 0.06, n = 2, t = 10. A = 42,000 × (1 + 0.03)^20 = 42,000 × (1.03)^20 ≈ 42,000 × 1.8061 ≈ Rs. 75,856.7.