Question

4. 96% of the cost of a TV is 10464. What is its total cost?
5. 70% of the students in a school are boys and the number of girls is 504. Find the number of
boys in the school.
6. An ore contains 12% copper. How many kilograms of the ore are required to get 69 kg
of copper?
7. 36% of the maximum marks is required to pass a test. A student gets 123 marks and is
declared fail by 39 marks. Find the maximum marks.
8. A fruit-seller had some apples. He sells 40% of them and still has 420 apples. Find the
number of apples he had originally.
9. In an examination. 72% of the total examinees passed. If the number of failures is 392. ſind
the total number of examinees.
10. After deducting a commission of 5%. a moped costs 15200. What is its gross value?
11. Gunpowder contains 75% of nitre and 10% of sulphur, and the rest of it is charcoal Fine
the amount of charcoal in 8 kg of gunpowder.
12. Chalk contains 3% of carbon, 10% of calcium and 12% of oxygen. Find the amount in gran
of each of these substances in 1 kg of chalk.
los mor​

Answer 1

Answer:

10464×100/96=10900......