Pakistan MCQs

Let cost be 100; marked price is 125 and sale price is 90% of 125 = 112.5.
The profit is 12.5 on a cost of 100.

The taxed price is 115% of the original price.
So the original is 2,300 ÷ 1.15 = Rs. 2,000.

Simple interest is PRT/100.
So 5,000 × 8 × 3 ÷ 100 = Rs. 1,200.

Each year, 90% of the previous value remains.
Thus, 50,000 × 0.9² = Rs. 40,500.

Using SI = PRT/100, 900 = P × 6 × 3/100.
Solving gives P = Rs. 5,000.

Compound growth gives 20,000 × 1.05².
The result is 22,050.

Rate = SI × 100 ÷ (P × T).
Thus, 800 × 100 ÷ (4,000 × 5) = 4%.

Daily work equals total work divided by the number of days.
Thus, A's one-day work is 1/12.

Compound amount is P(1 + r)².
Thus, 10,000 × 1.1² = Rs. 12,100.

Their combined daily rate is 1/10 + 1/15 = 1/6.
Therefore, they complete the job in 6 days.

The amount is 8,000 × 1.05² = Rs. 8,820.
Subtracting the principal gives compound interest of Rs. 820.

B's rate is 1/8 - 1/12 = 1/24.
Therefore, B alone needs 24 days.