SOLUTION: Rosie has an average of 30 out of 40 for her first six assignments. In order to be top of the class she needs an average of 31. What score does she need in her next assignment?

SOLUTION: Rosie has an average of 30 out of 40 for her first six assignments. In order to be top of the class she needs an average of 31. What score does she need in her next assignment?

Algebra.Com

Question 1035577: Rosie has an average of 30 out of 40 for her first six assignments. In order to be top of the class she needs an average of 31. What score does she need in her next assignment?

Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
For all seven to average 31, she would need
31 * 7 = 217 points total.
Well, she has 30 * 6 = 180 so far.
Thus she would need
217-180 = 37 points on her last one to average 31.
RELATED QUESTIONS
Jeanice needs an average score of 80% to pass her class. She has an average of 78% on her (answered by stanbon)

Lisa recorded her first 4 scores in a Math test. 86%,94%,78%,97%. In order to get an A... (answered by macston)

Question: For James to get a first class degree he needs to get an average of 80% in... (answered by macston)

Ruben has scores of 59, 74, and 86 on her tests so far, with one test to go. In order to (answered by JBarnum)

marisa is determined to do well in school this year her goal is to maintain an 85%... (answered by ankor@dixie-net.com)

Janice has an average of 74 on the first three tests in her algebra class. On the final... (answered by mananth)

A student has a mean (average) score of 88 in her math class. This is the average of her... (answered by josmiceli,greenestamps)

A student has an average score of 88 in her math class. This is the average of her first (answered by srinivas.g)

Carmen wants a 93 average in her math class. If she currently has a 90 And will take an... (answered by jorel1380)