last month mrs santos bought x kilos of fish for 600 today she paid the same amount but got 3 kilos less due to price increase of 45 per kilo. Find the value of x and the original price of a kilo of fish?
Thank you please help.
Amount purchased last month: x kilos
Since last month, she bought x kilos for 600, she paid 
, per kilo, then
Since today, she bought x 3 kilos for 600, she paid 
, per kilo
Since there was a 45 per kilo increase, then we have: 
600(x 3) + 45(x)(x - 3) = 600(x) ------- Multiplying by LCD, x(x 3)
------ Factoring out GCF, 45
(x - 8)(x + 5) = 0
x, or original amount purchased = 
kilos OR x = - 5 (ignore)
Original price of 1 kilo: 
, or 
You can do the check!!
Send comments, thank-yous, and inquiries to D at MathMadEzy@aol.com.
Further help is available, online or in-person, for a fee, obviously.
For FREE info and answers to questions about the ASVAB exam, the NYS 3 8 city/state wide exams,GENERAL
MATH and HOMEWORK QUESTIONS, or MATH QUESTIONS related to the Regents Integrated Algebra,
Regents Geometry, Regents Algebra 2/Trigonometry, SHSAT, COOP/HSPT/TACHS, PSAT, SAT, ACT, SSAT/ISEE,
GRE, CLEP, and the TASC/GED, you can visit: http://asvabstudyzone.freeforums.net/.
(