Practice NET Mathematics questions with answers and explanations.
Choose an option to check your answer.
A 10% loss on Rs. 1,200 is Rs. 120.
Subtracting gives a selling price of Rs. 1,080.
Choose an option to check your answer.
A 20% profit gives a selling price of Rs. 960.
Since this is 80% of marked price, marked price = 960/0.8 = Rs. 1,200.
Choose an option to check your answer.
The selling price is 125% of the cost price.
Thus, cost price = 1,500 ÷ 1.25 = Rs. 1,200.
Choose an option to check your answer.
He charges for 1,000 grams but supplies only 900 grams.
Gain percentage is 100/900 × 100 = 11 1/9%.
Choose an option to check your answer.
The discount is 15% of Rs. 2,000, which is Rs. 300.
The sale price is Rs. 2,000 - Rs. 300 = Rs. 1,700.
Choose an option to check your answer.
After a 10% discount, 90% remains; after another 20%, 80% of that remains.
The final price is 72%, so the total discount is 28%.
Choose an option to check your answer.
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.
Choose an option to check your answer.
Simple interest is PRT/100.
So 5,000 × 8 × 3 ÷ 100 = Rs. 1,200.
Choose an option to check your answer.
Using SI = PRT/100, 900 = P × 6 × 3/100.
Solving gives P = Rs. 5,000.
Choose an option to check your answer.
Rate = SI × 100 ÷ (P × T).
Thus, 800 × 100 ÷ (4,000 × 5) = 4%.
Choose an option to check your answer.
Compound amount is P(1 + r)².
Thus, 10,000 × 1.1² = Rs. 12,100.
Choose an option to check your answer.
The amount is 8,000 × 1.05² = Rs. 8,820.
Subtracting the principal gives compound interest of Rs. 820.
