Register
In a maths competition each correct answer gets 3 marks, but one mark is deducted for each incorrect answer. Grace answers all 30 questions that are on the test and scores 30 marks. How many questions
103,106 views
23 votes
23 votes
In a maths competition each correct answer gets 3 marks, but one mark is deducted for each incorrect answer.

Grace answers all 30 questions that are on the test and scores 30 marks. How many questions did she get wrong?

User Kimberli
by
3.8k points

1 Answer

7 votes
7 votes
Grace got 20 questions wrong.
User Guillaume Fenollar
by
3.3k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.3m questions

4.2m answers

Other Questions

A study was completed in Florida. In southern Florida, the study involved 3,000 patients; 54% of them experienced flulike symptoms during the same month. The study had a margin of error of 1.8%. What does
The sanchez family goes out for dinner, and the price of the meals is $60. The sales tax on the Meals is 7 percent, and they also want to leave a 15 percent tip. What is the total cost of the meal? Analyze
Simplify: 10 ÷ [(5 + 2) − 5]
WHAT IS 33 TIMES 5 TELL ME THE ANWER
At the beginning of a population study, a city had 240,000 people. Each year since, the population has grown by 9.7%. Lett be the number of years since start of the study. Let y be the city's population.
Link Copied!