Math Olympiad Contest Problems for Elementary and Middle Schools: #67 [HD]

Channel:
United States Mr. Math Expert
Subscribers:
4,730
Published on ● Video Link: https://www.youtube.com/watch?v=5OYtMqN57Gw


Duration: 2:28
294 views
0

Questions? Tips? Comments? Like me! Subscribe!

In a math contest of 15 problems, 4 points was given for each correct answer and 1 points was deducted for each incorrect answer. If Nancy answered all 15 problems and scored 30 points, how many correct answers did she have?



Other Videos By Mr. Math Expert


2017-03-11How to Change the Value of an Element of a Vector in MATLAB. [HD]
2017-03-11How to Find the Minimum Sample Size with Unknown Proportion. [HD]
2017-03-11How to Find the Minimum Sample Size Using Proportion. [HD]
2017-03-11How to Calculate the Confidence Interval for the Proportion. [HD]
2017-03-11How to Find the Minimum Sample Size With Unknown Population Standard Deviation. [HD]
2017-03-11How to Find the Confidence Interval for the Mean with Large Samples and Sigma Unknown. [HD]
2017-03-11How to Find the Confidence Interval for the Mean with Small Samples and Sigma Unknown. [HD]
2017-03-11Math Olympiad Contest Problems for Elementary and Middle Schools: #70 [HD]
2017-03-11Math Olympiad Contest Problems for Elementary and Middle Schools: #69 [HD]
2017-03-11Math Olympiad Contest Problems for Elementary and Middle Schools: #68 [HD]
2017-03-11Math Olympiad Contest Problems for Elementary and Middle Schools: #67 [HD]
2017-03-11Math Olympiad Contest Problems for Elementary and Middle Schools: #66 [HD]
2017-03-11Movie Review: A Patch of Blue (1965) [HD]
2017-03-11Movie Review: Mon oncle d'Amérique (1980) [HD]
2017-03-11Movie Review: The Miracle Worker (1962) [HD]
2017-03-11Movie Review: Logan’s Run (1976) [HD]
2017-03-11Movie Review: My Cousin Rachel (1952) [HD]
2017-03-11Selected Math Problem #17. [HD]
2017-03-11Selected Math Problem #16. [HD]
2017-03-10Movie Review: A Little Romance (1979) [HD]
2017-03-10Movie Review: The Last of the Mohicans (1992) [HD]


Tags:
Mathematics
math contests
math
olympiad
middle school
elementary school
word problems