(a) Kelvin gave away 5/6 of his local stamps and 125 foreign stamps, so he gave away a total of (5/6)*(2/3)*(total number of stamps) + 125 = (10/9)*(total number of stamps) + 125 stamps.
(b) Kelvin gave away 5/6 of his local stamps, so the fraction of his stamps given away that were local stamps is 5/6.
Kelvin collected some local and foreign stamps. 2/3 of them were local stamps and the rest
were foreign stamps. After he gave away 5/6 of his local stamps and 125 foreign stamps, he
had 1/6 of his stamps left.
(a) How many stamps did Kelvin give away?
(b) What fraction of his stamps given away were local stamps?
.
5 answers
KEVIN! WHERES KEVIN?!?!?
Kevin!!!!!! Are you home?????? 🤣🤣🤣🤣🤣🤣🤣
fix or eschew the NLP routines!
If he started with x stamps, then he gave away
(5/6)*(2/3)x + 125 = (5/9)x + 125 stamps
that means
4/9 x - 125 = 1/6 x
x = 450
(a) 5/9 * 450 + 125 = 375
(b) 250/375 = 2/3
If he started with x stamps, then he gave away
(5/6)*(2/3)x + 125 = (5/9)x + 125 stamps
that means
4/9 x - 125 = 1/6 x
x = 450
(a) 5/9 * 450 + 125 = 375
(b) 250/375 = 2/3
Although I see competent tutors here who were on Jiska (eg oobleck, mathhelper) the new automatic answer system seems to be a total disaster for the math, physics and chemistry questions that I am accustomed to helping with. More often than not the answers are incorrect but even if correct they are so brief that I can not imagine them being of any use to the student unless a cheater taking a test. This is just insane.
2 answers