Question

In a college of 35 students, the average speed of typing in an English class is 50 words per minute, but after one student left and 7 new students joined, the average typing speed became 49.5 words per minute. What is the typing speed of a student who types 5 words per minute faster than the student who left, if the total typing speed of the seven new students is 320 words per minute?

A 45.5 words per minute
B 55.2 words per minute
C 75.5 words per minute
D 85.5 words per minute
Practice Next

Hey! Ask a query