Answer:
He used 55% protein 500 pounds and 25% protein 1000 pounds
Step-by-step explanation:
x pounds of 55% contains x * 0.55 pounds of pure protein
y pounds of 25% contains x * 0.25 pounds of pure protein
1500 pounds of 35% contains 1500 * 0.35 = 525 pounds of pure protein
x + y = 1500 ... (1)
0.55 x + 0.25 y = 525 ...(2)
0.25 times both sides of (1)
0.25 x + 0.25 y = 1500 * 0.25 = 375 ... (3)
(2) - (3) 0.3 x = 150 .... divide 0.3 on both sides
x = 500
y = 1500 - 500 = 1000
Answer:
The compound interest one is better by about 14 bucks.
Step-by-step explanation:
Simple interest:
500(1+.06*10)=800
Compound interest:
500(1+.05)¹⁰=814.45
Answer:
45
Step-by-step explanation:
45+6=51
51-6=45
Another method:
6-6=0
45+0=45
2/3
because 14/3= 2.66666666
14-2.666666= 9.33333333
9.333333/14= 2/3