3. In a test,+3 marks are given for every correct answer and -1 mark is give
for every incorrect answer. Sona attempted all the questions and scored
+20 marks though she got 10 correct answers.
i. How many incorrect answers has she attempted?
11. How many questions were given in the test?
Answers
Answer:
1.a number added to its two- thirds is equal to 55.
2.a number when multiplied by 4 exceeds itself by 45.
3.a number is as much greater than 21 as it is less than 71.
4.2/5 of a number is less than the original number by 20.
5.two-thirds of a number is less than the original number by 3.
6.the fifth part of a number when increased by 5 equals its fourth part decreased by 5.
Step-by-step explanation:
1.a number added to its two- thirds is equal to 55.
2.a number when multiplied by 4 exceeds itself by 45.
3.a number is as much greater than 21 as it is less than 71.
4.2/5 of a number is less than the original number by 20.
5.two-thirds of a number is less than the original number by 3.
6.the fifth part of a number when increased by 5 equals its fourth part decreased by 5.
Answer:
total questions==20. Sona attempted incorrect answers=10