Maths
posted by Amanda .
When Professor Sum was asked by Mr. Little how many students in his classes, he answered. “All of them study either languages, or not at all. Onehalf of them study languages only. Onefourth of them study French, oneseventh study physics only, and 20 do not study at all.” How many students does Professor Sum have?
Respond to this Question
Similar Questions

math
When Professor Sum was asked by Mr. Little how many students were in his classes, he answered, “All of them study either languages, physics, or not at all. Onehalf of them study languages only, onefourth of them study French, oneseventh … 
Brain Teaser
When Professor Sum was asked by Mr. Little how many students were in his classes, he answered, “All of them study either languages, physics, or not at all. Onehalf of them study languages only, onefourth of them study French, oneseventh … 
statistics
A sample of the number of study per week of college students is collected. Some of the sample results of the survey are given in the following table Study Hr 4, 10, 20,24, 34, 36, 42 Z score 2.5,1.75,0.5,0, 1.25,1.5,2.25 P. Rank … 
Math
In a group of 40 students, all students study maths, 28 study biology and math, 20 students study geography and maths and x students study all three subjects. a. Draw a venn diagram to represent the information above, showing in terms … 
math
28 students,all of whom study either science,language or both.18 students study language and 14 study science.how many students study acience and language? 
Math
There are 21 pupils who study Maths, 29 pupils who study french, 26 pupils who study history. there are 4 pupils who study both maths and french. 10 pupils who study both french and history and 3 pupils who study both maths and history. … 
Maths
In a survey of 200 students of a school, it was found that 60% study mathematics, 45% study physics, 35% study chemistry, 20% study mathematics and physics, 15% study physics and chemistry, 25% study chemistry and mathematics and 10% … 
Mathematics
A survey of 100 students produced the following statics: 32 study mathematics, 20 study physics, 45 study Biology, 15 study mathematics and biology, 7 study mathematics and physics, 10 study physics and Biology, 30 do not study any … 
maths
in a class of 35 students twice as many study chemistry and study physics half a many study chemistry as study both subjects illustrate it on a venn diagram 
Math
In Mike's English class at university there are 178 students, of whom 51 also study history and 44 also study statistics. There are another 85 students who also study history, of whom 25 study statistics also. Another 35 students study …