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 (got 4 students)
swords jeez dude stop being so mean you shouldn't have a problem with it at least you have the answer
No Ms. Sue is correct because you have to multiply 20 by .80 and get 16
But then you have to subtract 16 by the original number so
20 - 16 = 4
Answer is 4 students need to finish
HOPED this helps
I am correct
Ms. Sue is correct.
for real
Right.
thanks kkb
Ms. Sue is right because the question asked for how many students STILL need to complete their projects, not how many already completed it.
just divide
Yes, you can also divide the original number of students by 5 to find the number of students who have not completed their projects.
20 divided by 5 = 4
So there are 4 students who still need to finish their projects.
80 divided by 20
The result of 80 divided by 20 is 4.
Ms. Sue is wrong. You are finding 80% of 20. Multiply 80 times 20, and get an answer of 1600.
Then, multiply 1600 by 100, and get an answer of 16. You are not simplifying.
Or, Multiply 8x2 and get 16, either way.