The correct answer is x=-2
SOLUTION - GIVEN = Sara has two bag with 60% & 28% peanut.
prove = How much the peanut is used to make 10 pound of 45%
peanut.
TO PROOF - Assume that
let x be the value of the peanut used by sara from the bag
60% peanut bag.
let ( 10 - x) be the value of peanut used by sara from 28% peanut
bag.
as given the bag become of the 10 pound which contain
45% of peanunt.
thus we have
0.60x + 0.28 ( 10 - x ) = 0.45 (10)
0.60x + 0.28 ( 10 -x ) = 4.5
0.60x + 2.8 - 0.28 x = 4.5
0.60x - 0.28x = 4.5 - 2.8
0.32x = 1.7
x = 5.3125 peanut is taken from the 60% bag.
& 4.6875 peanut from the 28% bag.
Answer:
x=25
Step-by-step explanation:
(x+40)+(3x+10)=6x
4x+50=6x
50=2x
25=x
Answer:
Step-by-step explanation:
8x = 2 * 2 * 2 * x
6 = 2* 3
Greatest common factor = 2
8x + 6 = 2*4x + 2*3
= 2*(4x + 3)
