SOLUTION: Robert got an 84% on his last exam if he answered 42 questions correctly, how many questions were there on the exam?
Algebra.Com
Question 774583: Robert got an 84% on his last exam if he answered 42 questions correctly, how many questions were there on the exam?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Robert got an 84% on his last exam if he answered 42 questions correctly,
how many questions were there on the exam?
:
let n = number questions on the exam
:
= .84
42 = .84n
n = 42/.84
n = 50 questions
RELATED QUESTIONS
a nurse student answered 80% of the questions on an exam correctly. if she answered 40... (answered by JimboP1977)
a student answered 87.5% of the exam correctly. if she answered 42 problems correctly,... (answered by vleith,josmiceli)
a student answered 60% of the questions on a math exam correctly. If she answered 24... (answered by dkppathak,chndnbl)
A student answered 70% of the questions on a math exam correctly. If she answered 35... (answered by macston)
A student answered 705 of the questions on their math exam correctly. If she answred 21... (answered by Alan3354)
A student received an 82% on an exam. If there were 50 questions on the exam, which... (answered by robertb)
James answered 84% of the test questions correctly. He answered 21 questions correctly.
(answered by jorel555)
On his last test Greg answered 64 questions correctly and got 80% right. How many... (answered by EdenWolf,MathLover1)
If you answered correctly 81% of the questions on a 100-question exam, how many questions (answered by rfer)