OpenStudy (anonymous):
Every month, a girl gets allowance. Assume last year she had no money, and kept it up to now. Then she spends 1/2 of her money on clothes, then 1/3 of the remaining money on games, and then 1/4 of the remaining money on toys. After she bought all of that, she had $7777 left. Assuming she only gets money by allowance, how much money does she earn every month?
OpenStudy (anonymous):
Let monthly allowance be $X. Last year she saved $12X. She then spent $6X on clothes (50% of her starting amount), leaving $6X She then spent 1/3 of this (i.e. $2X) on games, leaving $4X She then spent 1/4 of this (i.e. $X) on toys, leaving $3X So $3X = $7,777 and $X = $2,592.33 This monthly allowance looks a bit odd. Was I right in assuming she saved for 12 months, spending nothing last year?
Join our real-time social learning platform and learn together with your friends!
Unknownuser8009:
I have 12 days till my birthday... thoughts on what should I do?
fwval:
who is being affected by the santa ana winds? is it causing a massive problem for
lanaa:
positive a^3+b^3=(a+b)(a^2-ab+b^2) negative a^3-b^3=(a-b)(a^2+ab+b^2) 4.) x^3+1000=0 (factor the cubic) (5 and 6 factor the polynomial) 5.
