Q1. In a village, each of the 60% of families has a cow; each of the 30% of families has a buffalo and each of the 15% of families has both a cow and a buffalo. In all there are 96 families in the village. How many families do not have a cow or a buffalo?
Q2. The percentage of metals in a mine of lead ore is 60%. Now the percentage of silver is (3/4)% of metals and the rest is lead. If the mass of ore extracted from the mine is 8000 kg, the mass (in kg) of lead is:
Q3. In a motor of 120 machine parts, 5% parts were defective. In another motor of 80 machine parts, 10% parts were defective. For the two motors considered together, the percentage of defective machine parts were
Q4. A businessman imported Laptop, worth Rs. 210000, Mobile phones worth Rs. 100000 and Television sets worth Rs. 150000. He had to pay 10% duty on Laptops, 8% on phones and 5% on Television sets as special case. How much total duty (in rupees) he had to pay on all items as per above details?
Q5. The marked price of an article is Rs. 5000 but due to festive offer a certain percentage of discount is declared. Mr. X availed this opportunity and bought the article at reduced price. He then sold it at Rs. 5000 and thereby made a profit of 11 (1/9)%. The percentage of discount allowed was?
Direction (Q6-10): What approximate value should come in place of question mark (?) in the following questions?
(Note: You are not expected to calculate the exact value)