please check answers...
2.yesterday ,a parking lot had 10 cars parked in it.of the cars parked in the parking lot l,40% were silver,3 were red,and the rest were blue.how many of the cars were blue?
A.2 cars
B. 5 cars
C. 3 cars (I PICK THIS)
D. 8 cars
3.everyone in andy's class has to do a science project. Out of the 20 students,80% have completed their project.how many students still need to finish their projects?
A.100 students
B. 36 students
C. 16 students (I PICK THIS)
D. 4 students
lol, it's weird how they take the questions from other schools and change them a tiny bit.
Connexus: Yesterday, a parking lot had 60 cars parked in it. Of the cars parked in the parking lot, 40% were silver, 14 were red, and the rest were blue. How many of the cars were blue?
#2 ok
#3 read it again. I think you have it backwards.
For question 2, you are correct. The answer is C. 3 cars.
To explain how to arrive at this answer, let's break down the information given in the question:
- The parking lot had 10 cars in total.
- 40% of the cars were silver.
- 3 cars were red.
- The remaining cars were blue.
To find the number of blue cars, we need to subtract the number of silver and red cars from the total number of cars:
Number of blue cars = Total number of cars - Number of silver cars - Number of red cars
Total number of cars = 10
Number of silver cars = 40% of 10 = 4 cars
Number of red cars = 3 cars
Number of blue cars = 10 - 4 - 3 = 3 cars
Therefore, the correct answer is C. 3 cars.
Now let's move on to question 3:
- There are 20 students in Andy's class.
- 80% of the students have completed their science projects.
- We need to find the number of students who still need to finish their projects.
To find the number of students who still need to finish their projects, we need to subtract the number of students who have completed their projects from the total number of students:
Number of students who still need to finish their projects = Total number of students - Number of students who have completed their projects
Total number of students = 20
Number of students who have completed their projects = 80% of 20 = 16 students
Number of students who still need to finish their projects = 20 - 16 = 4 students
Therefore, the correct answer is D. 4 students.