78462litres of cola (c) and 4555623kilos of potatoes (p) costs £59635. 673562litres of cola and 506180.333333kilos of potatoes costs £38456. Find the cost of 1 litre of cola and 1 kilo of potatoes.
2006-11-21 06:34:17 · 7 answers · asked by mr yass 2 in Science & Mathematics ➔ Mathematics
set up a system of equations
c = litres of cola
p = kilos of potatoes
78462c + 4555623p = 59635
673562c + 506180.333333 = 38456
(78462c + 4555623p = 59635)(-1/9)
673562c + 506180.333333 = 38456
-8718c - 506180.333333p = -6626.111111
673562c + 506180.333333 = 38456
add the two equations together to get rid of p
664844c = 31829.88889
c = .0479
plug c back into the first equation to get p
p = .0122
ANSWER
c = .0479
p = .0122
2006-11-21 06:52:31 · answer #1 · answered by trackstarr59 3 · 0⤊ 0⤋
I think $300 in monthly health insurance.
let c = cost of cola, p = cost of potato
78462c + 4555623p = 59635 {1}
673562c + 506180p = 38456 {2}
solve for c or p, by multiply {1} with 673562 and {2} with 78462.
2006-11-21 14:36:19 · answer #2 · answered by Jason D 3 · 0⤊ 1⤋
Purple.
2006-11-21 14:41:00 · answer #3 · answered by p_rutherford2003 5 · 0⤊ 1⤋
your mom
2006-11-21 15:22:20 · answer #4 · answered by tinkerbell03 2 · 0⤊ 0⤋
78462x+4555623y=59635.673562x+506180.333333=38456 pounds
two equations and two unknowns solve
those having calculators please
2006-11-21 14:38:04 · answer #5 · answered by raj 7 · 0⤊ 1⤋
Why ??
2006-11-21 14:37:11 · answer #6 · answered by Anonymous · 0⤊ 1⤋
********
2006-11-21 14:47:19 · answer #7 · answered by Anonymous · 0⤊ 1⤋